CVE-2026-43860

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{"bugzilla": {"description": "mutt: mutt: Authentication bypass due to IMAP CRAM-MD5 hash truncation", "id": "2464859", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464859"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-193", "details": ["A flaw was found in mutt. During the IMAP CRAM-MD5 (Challenge-Response Authentication Mechanism - Message-Digest Algorithm 5) authentication, the password hash is truncated by one byte. This issue could allow a remote attacker to potentially bypass authentication, leading to unauthorized access."], "name": "CVE-2026-43860", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "mutt", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "mutt", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "mutt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "mutt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "mutt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-04T05:45:05Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43860\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43860\nhttps://github.com/muttmua/mutt/commit/834c5a2ed0479e51e8662a31caed129f136f4805"], "threat_severity": "Low"}

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