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mutt CVE-2026-43860

| EUVD-2026-26896 LOW
Off-by-one Error (CWE-193)
2026-05-04 mitre
3.7
CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

Lifecycle Timeline

7
Patch available
May 04, 2026 - 07:31 EUVD
Source Code Evidence Fetched
May 04, 2026 - 07:30 vuln.today
Analysis Generated
May 04, 2026 - 07:30 vuln.today
Patch released
May 04, 2026 - 07:16 nvd
Patch available
EUVD ID Assigned
May 04, 2026 - 07:00 euvd
EUVD-2026-26896
Analysis Generated
May 04, 2026 - 07:00 vuln.today
CVE Published
May 04, 2026 - 05:45 nvd
LOW 3.7

DescriptionNVD

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

AnalysisAI

mutt before version 2.3.2 truncates the IMAP CRAM-MD5 authentication hash by one byte due to incorrect use of strfcpy instead of memcpy, potentially allowing attackers to bypass or weaken authentication on IMAP connections through off-by-one string handling errors.

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CVE-2026-43860 vulnerability details – vuln.today

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