Vulnerability-Lookup

SUSE-SU-2026:2301-1

Vulnerability from csaf_suse - Published: 2026-06-08 13:55 - Updated: 2026-06-08 13:55

Summary

Security update for mutt

Severity

Moderate

Notes

Title of the patch: Security update for mutt

Description of the patch: This update for mutt fixes the following issues - CVE-2026-43859: `strfcpy` used instead of `memcpy` for the IMAP `auth_cram` MD5 digest (bsc#1263897). - CVE-2026-43860: truncation of `hash_passwd` by one byte for IMAP `auth_cram` MD5 digest (bsc#1263896). - CVE-2026-43861: missing check for `\0` in `url_pct_decode` (bsc#1263895). - CVE-2026-43862: mishandling of the `imap_auth_gss` security level (bsc#1263894). - CVE-2026-43863: infinite loop in `data_object_to_stream` in `crypt-gpgme.c` (bsc#1263893). - CVE-2026-43864: NULL pointer dereference in function `show_sig_summary` (bsc#1263892).

Patchnames: SUSE-2026-2301,SUSE-SLE-Module-Basesystem-15-SP7-2026-2301

CVE-2026-43859

4.8 (Medium)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected products

Recommended 6 products

Product	Version	Remediation
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.aarch64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.x86_64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-doc-2.2.14-150600.3.6.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-lang-2.2.14-150600.3.6.1.noarch	—	Vendor Fix

Threats

Impact moderate

CVE-2026-43860

4.8 (Medium)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected products

Recommended 6 products, the same list as for CVE-2026-43859

Threats

Impact moderate

CVE-2026-43861

5.3 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

Recommended 6 products, the same list as for CVE-2026-43859

Threats

Impact moderate

CVE-2026-43862

4.8 (Medium)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected products

Recommended 6 products, the same list as for CVE-2026-43859

Threats

Impact moderate

CVE-2026-43863

3.3 (Low)


                
                  CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Affected products

Recommended 6 products, the same list as for CVE-2026-43859

Threats

Impact low

CVE-2026-43864

2.5 (Low)


                
                  CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

Affected products

Recommended 6 products, the same list as for CVE-2026-43859

Threats

Impact low

References

29 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/s…	self
https://www.suse.com/support/update/announcement/…	self
https://lists.suse.com/pipermail/sle-updates/2026…	self
https://bugzilla.suse.com/1263892	self
https://bugzilla.suse.com/1263893	self
https://bugzilla.suse.com/1263894	self
https://bugzilla.suse.com/1263895	self
https://bugzilla.suse.com/1263896	self
https://bugzilla.suse.com/1263897	self
https://bugzilla.suse.com/1264047	self
https://www.suse.com/security/cve/CVE-2026-43859/	self
https://www.suse.com/security/cve/CVE-2026-43860/	self
https://www.suse.com/security/cve/CVE-2026-43861/	self
https://www.suse.com/security/cve/CVE-2026-43862/	self
https://www.suse.com/security/cve/CVE-2026-43863/	self
https://www.suse.com/security/cve/CVE-2026-43864/	self
https://www.suse.com/security/cve/CVE-2026-43859	external
https://bugzilla.suse.com/1263897	external
https://www.suse.com/security/cve/CVE-2026-43860	external
https://bugzilla.suse.com/1263896	external
https://www.suse.com/security/cve/CVE-2026-43861	external
https://bugzilla.suse.com/1263895	external
https://www.suse.com/security/cve/CVE-2026-43862	external
https://bugzilla.suse.com/1263894	external
https://www.suse.com/security/cve/CVE-2026-43863	external
https://bugzilla.suse.com/1263893	external
https://www.suse.com/security/cve/CVE-2026-43864	external
https://bugzilla.suse.com/1263892	external

JSON

To clipboard

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      "text": "moderate"
    },
    "category": "csaf_security_advisory",
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      },
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        "category": "legal_disclaimer",
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  "vulnerabilities": [
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          "text": "https://www.suse.com/security/cve/CVE-2026-43859"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "mutt before 2.3.2 sometimes uses strfcpy instead of memcpy for the IMAP auth_cram MD5 digest.",
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        }
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      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
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        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
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            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.ppc64le",
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            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.x86_64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-doc-2.2.14-150600.3.6.1.noarch",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-lang-2.2.14-150600.3.6.1.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-06-08T13:55:10Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-43859"
    },
    {
      "cve": "CVE-2026-43860",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-43860"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "mutt before 2.3.2 sometimes truncates the hash_passwd by one byte for IMAP auth_cram MD5 digest.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.aarch64",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.ppc64le",
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        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-43860",
          "url": "https://www.suse.com/security/cve/CVE-2026-43860"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1263896 for CVE-2026-43860",
          "url": "https://bugzilla.suse.com/1263896"
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      ],
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          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.aarch64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.ppc64le",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.s390x",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.x86_64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-doc-2.2.14-150600.3.6.1.noarch",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-lang-2.2.14-150600.3.6.1.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.aarch64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.ppc64le",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.s390x",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.x86_64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-doc-2.2.14-150600.3.6.1.noarch",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-lang-2.2.14-150600.3.6.1.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-06-08T13:55:10Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-43860"
    },
    {
      "cve": "CVE-2026-43861",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-43861"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "mutt before 2.3.2 does not check for \u0027\\0\u0027 in url_pct_decode.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.aarch64",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.ppc64le",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.s390x",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.x86_64",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-doc-2.2.14-150600.3.6.1.noarch",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-lang-2.2.14-150600.3.6.1.noarch"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-43861",
          "url": "https://www.suse.com/security/cve/CVE-2026-43861"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1263895 for CVE-2026-43861",
          "url": "https://bugzilla.suse.com/1263895"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.aarch64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.ppc64le",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.s390x",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.x86_64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-doc-2.2.14-150600.3.6.1.noarch",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-lang-2.2.14-150600.3.6.1.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.aarch64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.ppc64le",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.s390x",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.x86_64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-doc-2.2.14-150600.3.6.1.noarch",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-lang-2.2.14-150600.3.6.1.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-06-08T13:55:10Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-43861"
    },
    {
      "cve": "CVE-2026-43862",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-43862"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "In mutt before 2.3.2, the imap_auth_gss security level is mishandled.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.aarch64",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.ppc64le",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.s390x",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.x86_64",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-doc-2.2.14-150600.3.6.1.noarch",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-lang-2.2.14-150600.3.6.1.noarch"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-43862",
          "url": "https://www.suse.com/security/cve/CVE-2026-43862"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1263894 for CVE-2026-43862",
          "url": "https://bugzilla.suse.com/1263894"
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        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.aarch64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.ppc64le",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.s390x",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.x86_64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-doc-2.2.14-150600.3.6.1.noarch",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-lang-2.2.14-150600.3.6.1.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
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          },
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            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.x86_64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-doc-2.2.14-150600.3.6.1.noarch",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-lang-2.2.14-150600.3.6.1.noarch"
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          "category": "impact",
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      "cve": "CVE-2026-43863",
      "ids": [
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          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-43863"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "mutt before 2.3.2 has an infinite loop in data_object_to_stream in crypt-gpgme.c.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
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          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.x86_64",
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          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-lang-2.2.14-150600.3.6.1.noarch"
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          "category": "external",
          "summary": "CVE-2026-43863",
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          "category": "vendor_fix",
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            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.aarch64",
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            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.s390x",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.x86_64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-doc-2.2.14-150600.3.6.1.noarch",
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          "date": "2026-06-08T13:55:10Z",
          "details": "low"
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      "title": "CVE-2026-43863"
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          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-43864"
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      ],
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        {
          "category": "general",
          "text": "mutt before 2.3.2 has a show_sig_summary NULL pointer dereference.",
          "title": "CVE description"
        }
      ],
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          "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-lang-2.2.14-150600.3.6.1.noarch"
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      "references": [
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          "category": "external",
          "summary": "CVE-2026-43864",
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        {
          "category": "external",
          "summary": "SUSE Bug 1263892 for CVE-2026-43864",
          "url": "https://bugzilla.suse.com/1263892"
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      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.aarch64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.ppc64le",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.s390x",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.x86_64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-doc-2.2.14-150600.3.6.1.noarch",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-lang-2.2.14-150600.3.6.1.noarch"
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      ],
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        {
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            "baseScore": 2.5,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L",
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          },
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            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-2.2.14-150600.3.6.1.x86_64",
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            "SUSE Linux Enterprise Module for Basesystem 15 SP7:mutt-lang-2.2.14-150600.3.6.1.noarch"
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      "threats": [
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          "category": "impact",
          "date": "2026-06-08T13:55:10Z",
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      ],
      "title": "CVE-2026-43864"
    }
  ]
}

CVE-2026-43859 (GCVE-0-2026-43859)

Vulnerability from cvelistv5 – Published: 2026-05-04 05:41 – Updated: 2026-05-04 18:20

Summary

mutt before 2.3.2 sometimes uses strfcpy instead of memcpy for the IMAP auth_cram MD5 digest.

Severity

3.7 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-04 12:49 UTC

CWE

CWE-158 - Improper Neutralization of Null Byte or NUL Character

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/muttmua/mutt/commit/834c5a2ed0…

Impacted products

1 product

Vendor	Product	Version
mutt	mutt	Affected: 0 , < 2.3.2 (semver) cpe:2.3:a:mutt:mutt::::::::

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-43859",
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                  {
                    "Exploitation": "none"
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-04T12:49:36.673979Z",
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.7,
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        "dateUpdated": "2026-05-04T18:20:07.821Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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  "cveMetadata": {
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    "datePublished": "2026-05-04T05:41:07.610Z",
    "dateReserved": "2026-05-04T05:41:07.104Z",
    "dateUpdated": "2026-05-04T18:20:07.821Z",
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CVE-2026-43860 (GCVE-0-2026-43860)

Vulnerability from cvelistv5 – Published: 2026-05-04 05:45 – Updated: 2026-05-04 18:20

Summary

mutt before 2.3.2 sometimes truncates the hash_passwd by one byte for IMAP auth_cram MD5 digest.

Severity

3.7 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-04 12:50 UTC

CWE

CWE-193 - Off-by-one Error

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/muttmua/mutt/commit/834c5a2ed0…

Impacted products

1 product

Vendor	Product	Version
mutt	mutt	Affected: 0 , < 2.3.2 (semver) cpe:2.3:a:mutt:mutt::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-43861 (GCVE-0-2026-43861)

Vulnerability from cvelistv5 – Published: 2026-05-04 05:52 – Updated: 2026-05-04 18:20

Summary

mutt before 2.3.2 does not check for '\0' in url_pct_decode.

Severity

3.7 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-04 12:45 UTC

CWE

CWE-158 - Improper Neutralization of Null Byte or NUL Character

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/muttmua/mutt/commit/12f54fe3b6…

Impacted products

1 product

Vendor	Product	Version
mutt	mutt	Affected: 0 , < 2.3.2 (semver) cpe:2.3:a:mutt:mutt::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-43862 (GCVE-0-2026-43862)

Vulnerability from cvelistv5 – Published: 2026-05-04 06:00 – Updated: 2026-05-04 18:21

Summary

In mutt before 2.3.2, the imap_auth_gss security level is mishandled.

Severity

3.7 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-04 13:46 UTC

CWE

CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/muttmua/mutt/commit/f547a849cd…

Impacted products

1 product

Vendor	Product	Version
mutt	mutt	Affected: 0 , < 2.3.2 (semver) cpe:2.3:a:mutt:mutt::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-43863 (GCVE-0-2026-43863)

Vulnerability from cvelistv5 – Published: 2026-05-04 06:05 – Updated: 2026-05-04 18:25

Summary

mutt before 2.3.2 has an infinite loop in data_object_to_stream in crypt-gpgme.c.

Severity

3.7 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-04 13:47 UTC

CWE

CWE-253 - Incorrect Check of Function Return Value

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/muttmua/mutt/commit/fdc04a1717…

Impacted products

1 product

Vendor	Product	Version
mutt	mutt	Affected: 0 , < 2.3.2 (semver) cpe:2.3:a:mutt:mutt::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-43864 (GCVE-0-2026-43864)

Vulnerability from cvelistv5 – Published: 2026-05-04 06:10 – Updated: 2026-05-04 18:26

Summary

mutt before 2.3.2 has a show_sig_summary NULL pointer dereference.

Severity

2.5 (Low)


                        
                          CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-04 13:47 UTC

CWE

CWE-476 - NULL Pointer Dereference

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/muttmua/mutt/commit/ebfa296904…

Impacted products

1 product

Vendor	Product	Version
mutt	mutt	Affected: 0 , < 2.3.2 (semver) cpe:2.3:a:mutt:mutt::::::::

Show details on NVD website

JSON

To clipboard

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        "engine": "CVE-Request-form 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-43864",
    "datePublished": "2026-05-04T06:10:52.725Z",
    "dateReserved": "2026-05-04T06:10:52.216Z",
    "dateUpdated": "2026-05-04T18:26:15.822Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

SUSE-SU-2026:2301-1

CVE-2026-43859 (GCVE-0-2026-43859)

CVE-2026-43860 (GCVE-0-2026-43860)

CVE-2026-43861 (GCVE-0-2026-43861)

CVE-2026-43862 (GCVE-0-2026-43862)

CVE-2026-43863 (GCVE-0-2026-43863)

CVE-2026-43864 (GCVE-0-2026-43864)

Tags

Sightings

Nomenclature

Related by attack behaviour