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    5466 vulnerabilities by RedHat

    CVE-2026-1767 (GCVE-0-2026-1767)

    Vulnerability from cvelistv5 – Published: 2026-06-16 00:34 – Updated: 2026-06-16 14:57
    VLAI
    Title
    Localsearch: tracker-miners: gnome localsearch mp3 extractor: heap buffer overflow leading to denial of service or information disclosure via malformed mp3 id3 tags
    Summary
    A flaw was found in the GNOME localsearch (previously known as tracker-miners) MP3 Extractor `tracker-extract-mp3` component. A remote attacker could exploit this heap buffer overflow vulnerability by providing a specially crafted MP3 file containing malformed ID3 tags. This incorrect length calculation during the parsing of performer tags can lead to a read beyond the allocated buffer, potentially causing a Denial of Service (DoS) due to a crash or enabling information disclosure.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-805 - Buffer Access with Incorrect Length Value
    Assigner
    References
    URL Tags
    https://access.redhat.com/security/cve/CVE-2026-1767 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2435983 issue-trackingx_refsource_REDHAT
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
    Create a notification for this product.
    Date Public
    2026-02-02 11:11
    Credits
    Red Hat would like to thank Fatih Çelik for reporting this issue.
    Show details on NVD website

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    CVE-2026-1766 (GCVE-0-2026-1766)

    Vulnerability from cvelistv5 – Published: 2026-06-16 00:34 – Updated: 2026-06-16 14:58
    VLAI
    Title
    Localsearch: tracker-miners: gnome localsearch mp3 extractor: denial of service and information disclosure via malformed mp3 files.
    Summary
    A flaw was found in GNOME localsearch (previously known as tracker-miners) MP3 Extractor, specifically within the tracker-extract-mp3 component. This heap buffer overflow vulnerability occurs when processing specially crafted MP3 files containing malformed ID3v2.3 COMM (Comment) tags. An attacker could exploit this by providing a malicious MP3 file, leading to a denial of service (DoS), which causes an application crash, and potentially disclosing sensitive information from the heap memory.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-805 - Buffer Access with Incorrect Length Value
    Assigner
    References
    URL Tags
    https://access.redhat.com/security/cve/CVE-2026-1766 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2435982 issue-trackingx_refsource_REDHAT
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
    Create a notification for this product.
    Date Public
    2026-02-02 11:11
    Credits
    Red Hat would like to thank Fatih Çelik for reporting this issue.
    Show details on NVD website

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    CVE-2026-11793 (GCVE-0-2026-11793)

    Vulnerability from cvelistv5 – Published: 2026-06-09 13:11 – Updated: 2026-06-09 13:29
    VLAI
    Title
    389-ds-base: 389-ds-base: stack buffer overflow in checkprefix() algorithm id parsing
    Summary
    A stack buffer overflow flaw was found in 389 Directory Server. The checkPrefix() function in pw.c copies an attacker-controlled algorithm ID into a 256-byte stack buffer without bounds checking when parsing reversible-encrypted attribute values. An attacker with Directory Manager privileges can crash the LDAP server by storing a crafted credential with an oversized algorithm ID. FORTIFY_SOURCE mitigates this to denial of service only.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-121 - Stack-based Buffer Overflow
    Assigner
    Date Public
    2026-04-16 00:00
    Show details on NVD website

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    CVE-2026-11790 (GCVE-0-2026-11790)

    Vulnerability from cvelistv5 – Published: 2026-06-09 13:09 – Updated: 2026-06-09 13:29
    VLAI
    Title
    389-ds-base: 389-ds-base: pbkdf2 password storage plugin unbounded iteration count denial of service
    Summary
    A flaw was found in 389 Directory Server. The PBKDF2-SHA256 password storage plugin does not enforce an upper bound on the iteration count extracted from stored password hashes. A privileged attacker who can modify a user's password hash can cause excessive CPU consumption during authentication, resulting in denial of service.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-400 - Uncontrolled Resource Consumption
    Assigner
    Date Public
    2026-04-16 00:00
    Show details on NVD website

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    CVE-2026-11789 (GCVE-0-2026-11789)

    Vulnerability from cvelistv5 – Published: 2026-06-09 13:02 – Updated: 2026-06-09 16:16
    VLAI
    Title
    389-ds-base: 389-ds-base: smd5 password storage plugin salt length integer underflow crash
    Summary
    A flaw was found in 389 Directory Server. The SMD5 password storage plugin performs unsigned integer underflow when computing salt length from a crafted password hash shorter than 16 bytes, causing a buffer over-read that crashes the LDAP server during authentication.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-191 - Integer Underflow (Wrap or Wraparound)
    Assigner
    Date Public
    2026-04-16 00:00
    Show details on NVD website

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    CVE-2026-11788 (GCVE-0-2026-11788)

    Vulnerability from cvelistv5 – Published: 2026-06-09 13:02 – Updated: 2026-06-09 15:12
    VLAI
    Title
    389-ds-base: 389-ds-base: null pointer dereference in deref control plugin ber parser
    Summary
    A flaw was found in 389 Directory Server. The dereference control plugin does not check for allocation failure before using a BER structure, allowing an unauthenticated remote attacker to crash the LDAP server when the system is under memory pressure.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-476 - NULL Pointer Dereference
    Assigner
    Date Public
    2026-04-16 00:00
    Show details on NVD website

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    CVE-2026-11787 (GCVE-0-2026-11787)

    Vulnerability from cvelistv5 – Published: 2026-06-09 13:02 – Updated: 2026-06-18 14:51
    VLAI
    Title
    389-ds-base: 389-ds-base: heap buffer over-read in ldap_utf8prev() via str2simple filter parsing
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    A flaw was found in 389 Directory Server. The ldap_utf8prev() function reads bytes before the start of a buffer without bounds checking, causing a heap buffer over-read in string filter parsing that may influence internal filter processing behavior.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Date Public
    2026-04-16 00:00
    Show details on NVD website

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    CVE-2026-11785 (GCVE-0-2026-11785)

    Vulnerability from cvelistv5 – Published: 2026-06-09 12:57 – Updated: 2026-06-09 13:29
    VLAI
    Title
    389-ds-base: 389-ds-base: partial stack address information leak via ber_printf type confusion in sso token handler
    Summary
    A flaw was found in 389 Directory Server. A type confusion in the SSO token extended operation handler causes partial stack address information to be disclosed in LDAP responses to authenticated users.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
    Assigner
    Date Public
    2026-04-16 00:00
    Show details on NVD website

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    CVE-2026-11786 (GCVE-0-2026-11786)

    Vulnerability from cvelistv5 – Published: 2026-06-09 12:57 – Updated: 2026-06-09 13:38
    VLAI
    Title
    389-ds-base: 389-ds-base: heap out-of-bounds read in ldif parser str2entry_state_information_from_type()
    Summary
    A flaw was found in 389 Directory Server. The LDIF parser reads past the end of a heap buffer when processing attribute types with trailing semicolons during database import, causing an out-of-bounds read detectable under memory instrumentation.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Date Public
    2026-04-16 00:00
    Show details on NVD website

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              "value": "Validate LDIF files for malformed attribute types before importing. Reject any LDIF entry containing attribute types with trailing semicolons (e.g., userCertificate;binary;). Pre-import validation: grep -nE \u0027^[a-zA-Z][a-zA-Z0-9-]*;[^:]*;:\u0027 input.ldif \u0026\u0026 echo \"REJECT: trailing semicolon in attribute type\". This does not protect against the replication changelog path (corrupted stored data), but that path requires pre-existing database corruption, not external input."
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    CVE-2026-11611 (GCVE-0-2026-11611)

    Vulnerability from cvelistv5 – Published: 2026-06-08 16:17 – Updated: 2026-06-09 14:35
    VLAI
    Title
    389-ds-base: 389-ds-base: content sync plugin unbounded queue growth and race conditions
    Summary
    A flaw was found in 389 Directory Server. The Content Synchronization persistent search plugin allows unbounded memory growth when an authenticated client stops reading sync responses, enabling denial of service. Additional race conditions in plugin thread lifecycle can cause crashes during connection teardown or shutdown.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-400 - Uncontrolled Resource Consumption
    Assigner
    Date Public
    2026-04-16 00:00
    Show details on NVD website

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    CVE-2026-50263 (GCVE-0-2026-50263)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:36 – Updated: 2026-06-22 07:47
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free information disclosure in createsaverwindow()
    Summary
    A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50262 (GCVE-0-2026-50262)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:36 – Updated: 2026-06-22 07:47
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds read/write in glx changedrawableattributes
    Summary
    An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50264 (GCVE-0-2026-50264)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:36 – Updated: 2026-06-22 07:34
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds heap write in dri2 drigetbuffers/drigetbufferswithformat
    Summary
    An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds heap write. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    This issue was discovered by Peter Hutterer (Red Hat).
    Show details on NVD website

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    CVE-2026-50261 (GCVE-0-2026-50261)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:36 – Updated: 2026-06-22 07:34
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangecounter()
    Summary
    A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50260 (GCVE-0-2026-50260)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:36 – Updated: 2026-06-22 07:33
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in freecounter()
    Summary
    A use-after-free flaw was found in the X.Org X server and Xwayland in FreeCounter(). A client that sets up multiple SyncCounters and awaits on those triggers can trigger a use-after-free when destroying those counters via a second client connection. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50258 (GCVE-0-2026-50258)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:31 – Updated: 2026-06-22 07:34
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb key types due to unchecked shift levels
    Summary
    A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has multiple stack buffers sized XkbMaxShiftLevel * XkbNumKbdGroups but CheckKeyTypes() does not verify or clamp non-canonical key types to XkbMaxShiftLevel. A client can change key types to excessive shift levels and trigger stack overflows. This is caused by an incomplete fix of CVE-2025-26597. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-121 - Stack-based Buffer Overflow
    Assigner
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50259 (GCVE-0-2026-50259)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:31 – Updated: 2026-06-22 07:33
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb setmap request via mapwidths indexing
    Summary
    A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. _XkbSetMapChecks() declares a fixed-size stack buffer mapWidths[256] indexed by key type index. The helper function CheckKeyTypes() writes to this buffer at a client-controlled offset, allowing a stack buffer overflow. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-121 - Stack-based Buffer Overflow
    Assigner
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50256 (GCVE-0-2026-50256)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:31 – Updated: 2026-06-22 07:34
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in font alias resolution due to libxfont2 name length mismatch
    Summary
    A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. A mismatch between the X server and the libXfont2 library's maximum font name length can cause a stack buffer overflow during font alias resolution. The server allocates a 256 byte stack buffer but libXfont2's alias target name length is 1024 bytes. A font alias name between 257 and 1023 bytes causes the X server to copy that name into the undersized stack buffer without further checks. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-121 - Stack-based Buffer Overflow
    Assigner
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50257 (GCVE-0-2026-50257)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:31 – Updated: 2026-06-22 07:34
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in misyncdestroyfence()
    Summary
    A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence(). A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a second X connection destroys the fence, causing the use-after-free. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-1784 (GCVE-0-2026-1784)

    Vulnerability from cvelistv5 – Published: 2026-06-02 07:22 – Updated: 2026-06-17 12:55
    VLAI
    Title
    Ose-cluster-ingress-operator: remote code execution through haproxy configuration injection
    Summary
    The Route OpenShift resource allows to define routes to make pods reachable at a subdomain through HAProxy. It was found that the checks performed on the spec.path YAML stanza in a Route document was insufficient and could allow a controlled injection of the HAProxy configuration.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-15 - External Control of System or Configuration Setting
    Assigner
    References
    URL Tags
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    https://access.redhat.com/errata/RHSA-2026:23246 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:25045 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:25182 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:25194 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-1784 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2436075 issue-trackingx_refsource_REDHAT
    Impacted products
    Vendor Product Version
    Red Hat Red Hat OpenShift Container Platform 4.16 Unaffected: 1780962617 , < * (rpm)
        cpe:/a:redhat:openshift:4.16::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.18 Unaffected: 1780988280 , < * (rpm)
        cpe:/a:redhat:openshift:4.18::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.19 Unaffected: 1780043338 , < * (rpm)
        cpe:/a:redhat:openshift:4.19::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.20 Unaffected: 1780990977 , < * (rpm)
        cpe:/a:redhat:openshift:4.20::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.21 Unaffected: 1780444348 , < * (rpm)
        cpe:/a:redhat:openshift:4.21::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
    Create a notification for this product.
    Date Public
    2026-06-02 07:12
    Show details on NVD website

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    CVE-2026-10533 (GCVE-0-2026-10533)

    Vulnerability from cvelistv5 – Published: 2026-06-01 13:19 – Updated: 2026-06-08 14:13
    VLAI
    Title
    Openshift: openshift: non-admin user can bypass resourcequota and flood etcd with events causing cluster-wide api degradation
    Summary
    A flaw was found in OpenShift Container Platform. Completed pods with restartPolicy: Never do not count toward ResourceQuota pod limits, and Kubernetes events are not quota-scoped. A non-privileged user who can create pods in a namespace can exploit this to generate a large volume of events that accumulate in etcd, causing API server performance degradation across the cluster.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
    References
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    https://bugzilla.redhat.com/show_bug.cgi?id=2483727 issue-trackingx_refsource_REDHAT
    Impacted products
    Vendor Product Version
    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
    Create a notification for this product.
    Date Public
    2026-03-16 09:43
    Credits
    Red Hat would like to thank Chris Sinclair for reporting this issue.
    Show details on NVD website

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    CVE-2026-42965 (GCVE-0-2026-42965)

    Vulnerability from cvelistv5 – Published: 2026-05-29 09:50 – Updated: 2026-06-08 14:59
    VLAI
    Title
    Openshift/router: openshift/router: cloud metadata ssrf via fqdn-typed endpointslice bypasses destination validation
    Summary
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    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
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    Impacted products
    Vendor Product Version
    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
    Create a notification for this product.
    Date Public
    2026-04-17 21:46
    Credits
    This issue was discovered by Ricardo Pchevuzinske Katz (Red Hat).
    Show details on NVD website

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    CVE-2026-46579 (GCVE-0-2026-46579)

    Vulnerability from cvelistv5 – Published: 2026-05-29 09:50 – Updated: 2026-06-08 14:59
    VLAI
    Title
    Openshift/router: openshift/router: mtls client certificate spoofing via unstripped x-ssl-client headers on http frontend
    Summary
    A flaw was found in the OpenShift Router. When a Route has `insecureEdgeTerminationPolicy` set to Allow, the HTTP frontend does not remove `X-SSL-Client-*` headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted `X-SSL-Client-*` headers. As a result, backends relying on these headers for mutual TLS (Transport Layer Security) authentication can be bypassed, enabling the attacker to impersonate client certificate identities.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-287 - Improper Authentication
    Assigner
    References
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    https://bugzilla.redhat.com/show_bug.cgi?id=2483181 issue-trackingx_refsource_REDHAT
    Impacted products
    Vendor Product Version
    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
    Create a notification for this product.
    Date Public
    2026-04-17 20:10
    Credits
    This issue was discovered by Ricardo Pchevuzinske Katz (Red Hat).
    Show details on NVD website

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    CVE-2026-4408 (GCVE-0-2026-4408)

    Vulnerability from cvelistv5 – Published: 2026-05-28 07:25 – Updated: 2026-06-15 20:41
    VLAI
    Title
    Samba: remote code execution in samr
    Summary
    A flaw was found in Samba. A remote attacker can exploit a misconfiguration in Samba file servers and classic domain controllers that use the "check password script" feature. If this script is configured with the %u substitution character, the client-controlled username is passed without proper escaping of shell meta-characters. This vulnerability allows an attacker to achieve remote command execution on the affected system. This issue primarily affects non-standard configurations where the "check password script" is used with %u and the samba-dcerpcd service is started as a system service.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
    Assigner
    References
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:4.23.5-109.el10_2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:4.19.4-16.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
        cpe:/o:redhat:enterprise_linux:8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:4.23.5-10.el9_8 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
        cpe:/a:redhat:enterprise_linux:9::resilientstorage
        cpe:/o:redhat:enterprise_linux:9::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:4.21.3-14.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
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        cpe:/o:redhat:rhel_eus:9.6::baseos
    Create a notification for this product.
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    Create a notification for this product.
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    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
    Create a notification for this product.
    Date Public
    2026-05-26 00:00
    Credits
    Red Hat would like to thank John Walker (ZeroPath) and Ron Ben Yizhak (SafeBreach) for reporting this issue.
    Show details on NVD website

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    CVE-2026-9802 (GCVE-0-2026-9802)

    Vulnerability from cvelistv5 – Published: 2026-05-28 04:47 – Updated: 2026-06-10 21:22
    VLAI
    Title
    Keycloak: keycloak: unauthorized account access via replayed refresh tokens after cluster restart
    Summary
    A flaw was found in Keycloak. When revokeRefreshToken=true is enabled and persistent session storage is in use, a server restart can reset internal timing mechanisms. This allows a remote attacker, who has previously captured a user's refresh token, to replay that token even after it has been revoked. Successful exploitation grants the attacker unauthorized access to the victim's account, potentially leading to information disclosure or privilege escalation.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-613 - Insufficient Session Expiration
    Assigner
    References
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    https://access.redhat.com/errata/RHSA-2026:25098 vendor-advisoryx_refsource_REDHAT
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    https://bugzilla.redhat.com/show_bug.cgi?id=2482467 issue-trackingx_refsource_REDHAT
    Impacted products
    Vendor Product Version
    Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6.3-3 , < * (rpm)
        cpe:/a:redhat:build_keycloak:26.6::el9
    Create a notification for this product.
    Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6-6 , < * (rpm)
        cpe:/a:redhat:build_keycloak:26.6::el9
    Create a notification for this product.
    Red Hat Red Hat build of Keycloak 26.6.3     cpe:/a:redhat:build_keycloak:26.6::el9
    Create a notification for this product.
    Date Public
    2026-05-28 04:10
    Credits
    Red Hat would like to thank Gyeongpyo Son for reporting this issue.
    Show details on NVD website

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    CVE-2026-9803 (GCVE-0-2026-9803)

    Vulnerability from cvelistv5 – Published: 2026-05-28 04:47 – Updated: 2026-06-10 21:22
    VLAI
    Title
    Keycloak: keycloak: denial of service via malformed authorization header
    Summary
    A flaw was found in Keycloak's ClientRegistrationAuth component. A remote unauthenticated attacker can exploit this vulnerability by sending a specially crafted POST request with a malformed 'Authorization: Bearer' header to any client registration endpoint. This can lead to an ArrayIndexOutOfBoundsException, causing the server to return an HTTP 500 error and resulting in a Denial of Service (DoS) for the affected service.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
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    https://access.redhat.com/errata/RHSA-2026:25097 vendor-advisoryx_refsource_REDHAT
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    https://bugzilla.redhat.com/show_bug.cgi?id=2482465 issue-trackingx_refsource_REDHAT
    Impacted products
    Vendor Product Version
    Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6.3-3 , < * (rpm)
        cpe:/a:redhat:build_keycloak:26.6::el9
    Create a notification for this product.
    Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6-6 , < * (rpm)
        cpe:/a:redhat:build_keycloak:26.6::el9
    Create a notification for this product.
    Red Hat Red Hat build of Keycloak 26.6.3     cpe:/a:redhat:build_keycloak:26.6::el9
    Create a notification for this product.
    Date Public
    2026-05-28 04:03
    Credits
    Red Hat would like to thank Mustafa Çetin for reporting this issue.
    Show details on NVD website

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    CVE-2026-9801 (GCVE-0-2026-9801)

    Vulnerability from cvelistv5 – Published: 2026-05-28 04:42 – Updated: 2026-06-10 21:22
    VLAI
    Title
    Keycloak: keycloak: denial of service via malformed ldap password policy response
    Summary
    A flaw was found in Keycloak. A remote attacker with high privileges, such as a realm administrator configuring a malicious Lightweight Directory Access Protocol (LDAP) server or an attacker compromising an upstream LDAP server, could exploit this vulnerability. By sending a malformed LDAP password policy response during a password authentication request, the attacker can trigger an OutOfMemoryError. This causes the Keycloak Java Virtual Machine (JVM) to terminate, leading to a denial of service (DoS) for all realms on the affected node.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-1284 - Improper Validation of Specified Quantity in Input
    Assigner
    References
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    Impacted products
    Vendor Product Version
    Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6.3-3 , < * (rpm)
        cpe:/a:redhat:build_keycloak:26.6::el9
    Create a notification for this product.
    Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6-6 , < * (rpm)
        cpe:/a:redhat:build_keycloak:26.6::el9
    Create a notification for this product.
    Red Hat Red Hat build of Keycloak 26.6.3     cpe:/a:redhat:build_keycloak:26.6::el9
    Create a notification for this product.
    Date Public
    2026-05-28 04:18
    Credits
    Red Hat would like to thank Seongkuk Park for reporting this issue.
    Show details on NVD website

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    CVE-2026-9798 (GCVE-0-2026-9798)

    Vulnerability from cvelistv5 – Published: 2026-05-28 04:37 – Updated: 2026-05-29 18:30
    VLAI
    Title
    Keycloak: keycloak: brute-force protection bypass in ciba flow
    Summary
    A flaw was found in Keycloak, an open-source identity and access management solution. When a user account is temporarily locked due to repeated failed login attempts, an attacker with valid client credentials can exploit the Client-Initiated Backchannel Authentication (CIBA) flow to bypass this brute-force protection. This allows continued authentication attempts and token issuance even when the account should be locked, potentially enabling further unauthorized access attempts.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-305 - Authentication Bypass by Primary Weakness
    Assigner
    References
    URL Tags
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    https://bugzilla.redhat.com/show_bug.cgi?id=2482470 issue-trackingx_refsource_REDHAT
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Build of Keycloak     cpe:/a:redhat:build_keycloak:
    Create a notification for this product.
    Date Public
    2026-05-28 03:53
    Credits
    Red Hat would like to thank Evan Hendra (Independent Security Researcher) for reporting this issue.
    Show details on NVD website

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    CVE-2026-9796 (GCVE-0-2026-9796)

    Vulnerability from cvelistv5 – Published: 2026-05-28 04:27 – Updated: 2026-05-28 12:16
    VLAI
    Title
    Keycloak: keycloak: privilege escalation via time-of-check to time-of-use (toctou) vulnerability
    Summary
    A flaw was found in Keycloak. An authenticated administrator with the `manage-clients` role can exploit a Time-of-check to time-of-use (TOCTOU) vulnerability in the name-based admin role checks. This allows the attacker to escalate their privileges to `realm-admin` for all users within the realm, granting them extensive control over the system. The composite role relationship persists even after the attacker's own permissions are revoked and across system reboots.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
    Assigner
    References
    URL Tags
    https://access.redhat.com/security/cve/CVE-2026-9796 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2482464 issue-trackingx_refsource_REDHAT
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Build of Keycloak     cpe:/a:redhat:build_keycloak:
    Create a notification for this product.
    Date Public
    2026-05-28 03:32
    Credits
    Red Hat would like to thank Daniel Peters (Operating Intelligence Inc.), Lior Moshe (Operating Intelligence Inc.), and Uri Rolls (Operating Intelligence Inc.) for reporting this issue.
    Show details on NVD website

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    CVE-2026-9795 (GCVE-0-2026-9795)

    Vulnerability from cvelistv5 – Published: 2026-05-28 03:49 – Updated: 2026-05-28 13:12
    VLAI
    Title
    Keycloak: keycloak: privilege escalation via improper scope mapping enforcement
    Summary
    A flaw was found in Keycloak's Fine-Grained Admin Permissions (FGAPv2) feature. An administrator with limited client management permissions can exploit this vulnerability to assign any realm role, including highly privileged roles, to a client's scope mapping. This bypasses intended security controls, allowing the injected role to be projected into a user's authentication token when they access the modified client. This could lead to unauthorized privilege escalation within the Keycloak realm.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-266 - Incorrect Privilege Assignment
    Assigner
    References
    URL Tags
    https://access.redhat.com/security/cve/CVE-2026-9795 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2482462 issue-trackingx_refsource_REDHAT
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Build of Keycloak     cpe:/a:redhat:build_keycloak:
    Create a notification for this product.
    Date Public
    2026-05-28 03:16
    Credits
    Red Hat would like to thank Andrej Tomci for reporting this issue.
    Show details on NVD website

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