Common Weakness Enumeration
CWE-297
AllowedImproper Validation of Certificate with Host Mismatch
Abstraction: Variant · Status: Incomplete
The product communicates with a host that provides a certificate, but the product does not properly ensure that the certificate is actually associated with that host.
112 vulnerabilities reference this CWE, most recent first.
CVE-2026-66053 (GCVE-0-2026-66053)
Vulnerability from cvelistv5 – Published: 2026-07-27 11:18 – Updated: 2026-07-27 13:08
VLAI
EPSS
VEX
Title
Apache Thrift: Python TSSLSocket Hostname Matcher Import
Summary
Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift Python bindings.
This issue affects Apache Thrift: before 0.24.0.
Users are recommended to upgrade to version 0.24.0, which fixes the issue.
This replaces CVE-2026-41603
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-297 - Improper Validation of Certificate with Host Mismatch
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/7v3jhgwfbmhx42424… | vendor-advisory |
| https://lists.apache.org/thread/w4k5dnv1x58knwlhp… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.24.0
(semver)
|
Credits
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CVE-2026-59638 (GCVE-0-2026-59638)
Vulnerability from cvelistv5 – Published: 2026-08-03 00:57 – Updated: 2026-08-03 13:23
VLAI
EPSS
VEX
Title
JSSE hostname verifier CN-fallback enabled by default despite documented opt-in
Summary
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Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-297 - Improper Validation of Certificate with Host Mismatch
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/bcgit/bc-java/wiki/CVE%E2%80%9… | vendor-advisory |
| https://github.com/bcgit/bc-java/commit/799bd1532… | patch |
| https://github.com/bcgit/bc-java/commit/5ac55351c… | patch |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Legion of the Bouncy Castle Inc. | BC-JAVA |
Affected:
1.61 , < 1.85
(maven)
|
|
| Legion of the Bouncy Castle Inc. | BC-LTS-JAVA |
Affected:
2.73.0 , < 2.73.12
(maven)
|
|
| Legion of the Bouncy Castle Inc. | BC-FJA |
Affected:
1.0.7 , < 1.0.24
(maven)
Affected: 2.0.0 , < 2.0.24 (maven) Affected: 2.1.0 , < 2.1.24 (maven) |
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CVE-2026-54275 (GCVE-0-2026-54275)
Vulnerability from cvelistv5 – Published: 2026-06-22 16:34 – Updated: 2026-06-22 17:27
VLAI
EPSS
VEX
Title
AIOHTTP: TLS Server Hostname Override Is Ignored When Reusing HTTPS Connections
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, the server_hostname TLS SNI check can be bypassed when an existing connection is reused. If an application makes multiple requests to the same domain, but with different per-request server_hostname parameters, then the later calls may succeed by reusing the existing connection when they should have been rejected due to the TLS SNI check. This vulnerability is fixed in 3.14.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-297 - Improper Validation of Certificate with Host Mismatch
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
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CVE-2026-48145 (GCVE-0-2026-48145)
Vulnerability from cvelistv5 – Published: 2026-07-27 10:59 – Updated: 2026-07-27 13:03
VLAI
EPSS
VEX
Title
Apache Thrift: C++ TSSLSocket matchName() RFC 6125 Wildcard Bypass
Summary
Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift C++ bindings.
This issue affects Apache Thrift: before 0.24.0.
Users are recommended to upgrade to version 0.24.0, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-297 - Improper Validation of Certificate with Host Mismatch
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/7v3jhgwfbmhx42424… | vendor-advisory |
| https://lists.apache.org/thread/2popgc4ks1l87jjho… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.24.0
(semver)
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CVE-2026-48144 (GCVE-0-2026-48144)
Vulnerability from cvelistv5 – Published: 2026-07-27 10:58 – Updated: 2026-07-28 03:55
VLAI
EPSS
VEX
Title
Apache Thrift: c_glib TLS Client Missing Hostname Verification
Summary
Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift c_glib bindings.
This issue affects Apache Thrift: before 0.24.0.
Users are recommended to upgrade to version 0.24.0, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-297 - Improper Validation of Certificate with Host Mismatch
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/7v3jhgwfbmhx42424… | vendor-advisory |
| https://lists.apache.org/thread/2xoltfxgzf5jyhcwq… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.24.0
(semver)
|
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CVE-2026-44467 (GCVE-0-2026-44467)
Vulnerability from cvelistv5 – Published: 2026-05-13 15:40 – Updated: 2026-05-14 18:29
VLAI
EPSS
VEX
Title
Claude Desktop: SSH Host Key Verification Bypass Allows Man-in-the-Middle Attack on Remote Sessions
Summary
The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side. From 1.2581.0 to before 1.4304.0, Claude Desktop's SSH remote development feature verified only whether a hostname existed in ~/.ssh/known_hosts without comparing the server's presented host key against the stored key. This allowed a network-positioned attacker to present an arbitrary SSH host key and have the connection silently accepted, enabling a man-in-the-middle attack on remote development sessions. Successful exploitation required the attacker to be in a network position to intercept SSH traffic (e.g., via ARP spoofing, rogue Wi-Fi, or DNS poisoning) and the target hostname to already have an entry in the victim's known_hosts file. This vulnerability is fixed in 1.4304.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
>= 1.2581.0, < 1.4304.0
|
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CVE-2026-43869 (GCVE-0-2026-43869)
Vulnerability from cvelistv5 – Published: 2026-05-05 07:25 – Updated: 2026-08-04 12:07
VLAI
EPSS
VEX
Title
Apache Thrift: TSSLTransportFactory.java hostname verification
Summary
Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift.
This issue affects Apache Thrift: before 0.23.0.
Users are recommended to upgrade to version 0.23.0, which fixes the issue.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
18 references
Impacted products
27 products
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.23.0
(semver)
|
|
| Red Hat | Cryostat 4 on RHEL 9 |
Unaffected:
4.2.0-16 , < *
(rpm)
cpe:/a:redhat:cryostat:4::el9 |
|
| Red Hat | Red Hat Build of Apache Camel 3.33 for Quarkus 3.33.2.SP1 |
cpe:/a:redhat:apache_camel_quarkus:3.33 |
|
| Red Hat | Multicluster Global Hub 1.3.4 |
Unaffected:
1779212259 , < *
(rpm)
cpe:/a:redhat:multicluster_globalhub:1.3::el9 |
|
| Red Hat | Multicluster Global Hub 1.5.4 |
Unaffected:
1778867753 , < *
(rpm)
cpe:/a:redhat:multicluster_globalhub:1.5::el9 |
|
| Red Hat | Multicluster Global Hub 1.7.1 |
Unaffected:
1779925273 , < *
(rpm)
cpe:/a:redhat:multicluster_globalhub:1.7::el9 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.13 |
Unaffected:
1782383730 , < *
(rpm)
cpe:/a:redhat:acm:2.13::el9 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.14 |
Unaffected:
1782693386 , < *
(rpm)
cpe:/a:redhat:acm:2.14::el9 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.15 |
Unaffected:
1780677003 , < *
(rpm)
cpe:/a:redhat:acm:2.15::el9 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.16 |
Unaffected:
1780926805 , < *
(rpm)
cpe:/a:redhat:acm:2.16::el9 |
|
| Red Hat | Red Hat multicluster global hub 1.4.4 |
Unaffected:
1779579439 , < *
(rpm)
cpe:/a:redhat:multicluster_globalhub:1.4::el9 |
|
| Red Hat | Red Hat multicluster global hub 1.6.0 |
Unaffected:
1780167118 , < *
(rpm)
cpe:/a:redhat:multicluster_globalhub:1.6::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783443816 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift distributed tracing 3.10.0 |
Unaffected:
1781589494 , < *
(rpm)
cpe:/a:redhat:openshift_distributed_tracing:3.10::el9 |
|
| Red Hat | Multicluster Global Hub |
cpe:/a:redhat:multicluster_globalhub |
|
| Red Hat | OpenShift Service Mesh 2 |
cpe:/a:redhat:service_mesh:2 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2 |
cpe:/a:redhat:acm:2 |
|
| Red Hat | Red Hat AI Inference Server |
cpe:/a:redhat:ai_inference_server:3 |
|
| Red Hat | Red Hat build of Apache Camel 4 for Quarkus 3 |
cpe:/a:redhat:camel_quarkus:3 |
|
| Red Hat | Red Hat Data Grid 8 |
cpe:/a:redhat:jboss_data_grid:8 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Fuse 7 |
cpe:/a:redhat:jboss_fuse:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack |
cpe:/a:redhat:jbosseapxp |
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
|
| Red Hat | Red Hat OpenShift distributed tracing 3 |
cpe:/a:redhat:openshift_distributed_tracing:3 |
|
| Red Hat | Red Hat OpenStack Platform 18.0 |
cpe:/a:redhat:openstack:18.0 |
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CVE-2026-42790 (GCVE-0-2026-42790)
Vulnerability from cvelistv5 – Published: 2026-05-27 15:09 – Updated: 2026-07-24 14:16
VLAI
EPSS
VEX
Title
nameConstraints DNS bypass via subject CommonName fallback in public_key hostname verification
Summary
Improper Certificate Validation vulnerability in Erlang OTP public_key (pubkey_cert and public_key modules) allows a DNS nameConstraints bypass via subject CommonName fallback in TLS hostname verification.
Two flaws combine to allow a subordinate CA whose DNS nameConstraints are restricted (e.g. permitted;DNS:allowed.example.com) to issue a leaf certificate that an OTP TLS client accepts as a valid identity for an out-of-scope hostname (e.g. victim.example.com):
First, pubkey_cert:validate_names/6 in lib/public_key/src/pubkey_cert.erl only checks SAN DNS entries against nameConstraints. Per RFC 5280, a permitted DNS subtree only restricts certificates that contain a DNS-typed name. A leaf with no subjectAltName therefore trivially satisfies any permitted;DNS:... constraint regardless of its subject commonName.
Second, public_key:pkix_verify_hostname/3 in lib/public_key/src/public_key.erl falls back to the subject commonName when no subjectAltName is present, extracting id-at-commonName attributes as presented IDs and matching them against the reference hostname. The strict pkix_verify_hostname_match_fun(https) matcher does not suppress this fallback.
The result is that path validation accepts a CN-only leaf under a DNS-constrained intermediate (no SAN means the nameConstraints are not triggered), and hostname verification then accepts it via the CN fallback. The bypass is reachable from stock ssl:connect with verify_peer, a trusted CA, SNI, and the canonical strict https hostname matcher.
This issue affects OTP from OTP 19.3 before OTP 29.0.1, OTP 28.5.0.1, OTP 27.3.4.12 and OTP 26.2.5.21, corresponding to public_key from 1.4 before 1.21.1, 1.20.3.1, 1.17.1.3 and 1.15.1.7.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
11 references
| URL | Tags |
|---|---|
| https://github.com/erlang/otp/security/advisories… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-42790.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-42790 | related |
| https://www.erlang.org/doc/system/versions.html#o… | x_version-scheme |
| https://github.com/erlang/otp/commit/0769050c69d7… | patch |
| https://github.com/erlang/otp/commit/fb67c6d1836f… | patch |
| https://github.com/erlang/otp/commit/21abed64eb20… | patch |
| https://access.redhat.com/security/cve/CVE-2026-42790 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2482286 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:39809 | vendor-advisoryx_refsource_REDHAT |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Erlang | OTP |
Affected:
1.4 , < *
(otp)
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
|
| Erlang | OTP |
Affected:
19.3 , < *
(otp)
Affected: b0c245e8132bb13171e277b1af59c0cec00c9459 , < * (git) cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
|
| Red Hat | Red Hat OpenStack Platform 16.2 |
cpe:/a:redhat:openstack:16.2 |
|
| Red Hat | Red Hat OpenStack Platform 17.1 |
cpe:/a:redhat:openstack:17.1 |
|
| Red Hat | Red Hat OpenStack Platform 18.0 |
cpe:/a:redhat:openstack:18.0 |
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CVE-2026-41603 (GCVE-0-2026-41603)
Vulnerability from cvelistv5 – Published: 2026-04-28 09:19 – Updated: 2026-07-27 14:16
VLAI
EPSS
VEX
This CVE ID is Rejected and will not be used. The record incorrectly described the affected language binding and fixed version. Use CVE-2026-66053, which was assigned to the vulnerability.
Replaced by CVE-2026-66053
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CVE-2026-35563 (GCVE-0-2026-35563)
Vulnerability from cvelistv5 – Published: 2026-06-01 07:12 – Updated: 2026-06-01 13:09
VLAI
EPSS
VEX
Title
Apache Directory LDAP API: LDAP client implementation does not verify if the server certificate matches the intended LDAP hostname
Summary
It was identified that the LDAP client implementation in version 2.1.7 does not verify if the server certificate matches the intended LDAP
hostname. While the underlying code validates the certificate chain
against a trusted authority, the absence of endpoint identification
allows a valid certificate issued for an entirely unrelated host to be
improperly accepted. This oversight leaves the connection highly
vulnerable to server impersonation and complete connection compromise.
The
root cause of this vulnerability lies in the incomplete TLS server
identity verification within the LDAP client implementation.
The attacker requires MITM capability on the network to exploit this vulnerability. This attacker must be able to present a certificate trusted by the client's configured trust store.
The hostname verification has been enforced in the new version of the LDAP API
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-297 - Improper Validation of Certificate with Host Mismatch
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Directory LDAP API |
Affected:
2.0.0 , ≤ 2.1.7
(maven)
|
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"title": "Apache Directory LDAP API: LDAP client implementation does not verify if the server certificate matches the intended LDAP hostname",
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Mitigation
Architecture and Design
Fully check the hostname of the certificate and provide the user with adequate information about the nature of the problem and how to proceed.
Mitigation
Implementation
If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.
No CAPEC attack patterns related to this CWE.