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CVE-2026-100889
5.5 MEDIUM
- CVSS version (CVSS): 4.0
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Attack Requirement (AT): None (N)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Vulnerable System Impact Confidentiality (VC): Low (L)
- Vulnerable System Impact Integrity (VI): Low (L)
- Vulnerable System Impact Availability (VA): Low (L)
- Subsequent System Impact Confidentiality (SC): None (N)
- Subsequent System Impact Integrity (SI): None (N)
- Subsequent System Impact Availability (SA): None (N)
- Exploit Maturity (E): POC (P)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Attack Requirement (MAT): None (N)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Vulnerable System Impact Confidentiality (MVC): Low (L)
- Modified Vulnerable System Impact Integrity (MVI): Low (L)
- Modified Vulnerable System Impact Availability (MVA): Low (L)
- Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
- Modified Subsequent System Impact Integrity (MSI): Negligible (N)
- Modified Subsequent System Impact Availability (MSA): Negligible (N)
- Safety (S): Not Defined (X)
- Automatable (AU): Not Defined (X)
- Recovery (R): Not Defined (X)
- Value Density (V): Not Defined (X)
- Vulnerability Response Effort (RE): Not Defined (X)
- Provider Urgency (U): Not Defined (X)
- Confidentiality Req. (CR): Not Defined (X)
- Integrity Req. (IR): Not Defined (X)
- Availability Req. (AR): Not Defined (X)
by @LeSuisse Activity log
- Created suggestion
- @LeSuisse accepted
- @LeSuisse published on GitHub
Trusted Domain Project OpenDKIM Decoder util.c dkim_qp_decode off-by-one
A vulnerability was detected in Trusted Domain Project OpenDKIM up to 2.11.0. Affected is the function dkim_qp_decode of the file util.c of the component Decoder. The manipulation results in off-by-one. The attack may be performed from remote. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
References
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VDB-410839 | Trusted Domain Project OpenDKIM Decoder util.c dkim_qp_decode off-by-one technical-descriptionvdb-entry
-
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CVE-2026-100889 | CVE Analysis and Report third-party-advisory
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Submit #917063 | The Trusted Domain Project OpenDKIM 2.11.0 Out-of-Bounds Read third-party-advisory
Affected products
OpenDKIM
- ==2.0
- ==2.9
- ==2.2
- ==2.8
- ==2.4
- ==2.10
- ==2.6
- ==2.5
- ==2.7
- ==2.11.0
- ==2.3
- ==2.1
Matching in nixpkgs
pkgs.opendkim
C library for producing DKIM-aware applications and an open source milter for providing DKIM service
-
nixos-unstable -
- nixos-unstable-small 2.11.0-Beta2
-
nixos-26.05 -
- nixos-26.05-small 2.11.0-Beta2
Package maintainers
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@maevii Maevi <me@maevi.net>