A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. (CVE-2026-101014)
Description
A vulnerability in Trusted Domain Project OpenDMARC up to version 1.4.2 affects the DMARC Record Parser component. The flaw is an off-by-one error in the opendmarc_util_cleanup function within the libopendmarc/opendmarc_util.c file. This vulnerability can be exploited remotely and has a CVSS score of 7.3, indicating a medium severity level. A patch identified by commit b3b1da9264bc80324094a27c71e7369bdedc62ae is available to address this issue. Multiple specific versions up to 1.4.2 are affected. No known exploits are reported in the wild at this time.
CVSS v3.1
Score 7.3high
Affected software
pkg:deb/ubuntu/opendmarc?arch=source&distro=esm-apps/xenialpkg:deb/ubuntu/opendmarc?arch=source&distro=bionicpkg:deb/ubuntu/opendmarc?arch=source&distro=focalpkg:deb/ubuntu/opendmarc?arch=source&distro=jammypkg:deb/ubuntu/opendmarc?arch=source&distro=noblepkg:deb/ubuntu/opendmarc?arch=source&distro=stonkingpkg:deb/ubuntu/opendmarc?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Trusted Domain Project OpenDMARC software up to version 1.4.2 contains an off-by-one vulnerability in the opendmarc_util_cleanup function of the DMARC Record Parser component. This flaw allows remote attackers to manipulate the function, potentially impacting confidentiality, integrity, and availability. The vulnerability has been assigned CVE-2026-101014 with a CVSS 3.1 base score of 7.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L). A patch identified by commit b3b1da9264bc80324094a27c71e7369bdedc62ae is recommended for remediation.
Potential Impact
Successful exploitation of this off-by-one vulnerability may lead to partial loss of confidentiality, integrity, and availability of the affected system. The vulnerability can be triggered remotely without authentication. However, no active exploitation in the wild has been reported so far.
Mitigation Recommendations
A patch is available for this vulnerability, identified by commit b3b1da9264bc80324094a27c71e7369bdedc62ae. It is recommended to apply this patch to affected OpenDMARC versions to remediate the issue. No vendor advisory content contradicts this recommendation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-101014
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:Pro:16.04:LTS","Ubuntu:18.04:LTS","Ubuntu:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:26.10","Ubuntu:26.04:LTS"]
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad3f5052cdf04f656657bdf
Added to database: 10/17/2026, 22:21:57 UTC
Last enriched: 10/17/2026, 22:50:25 UTC
Last updated: 10/17/2026, 22:50:25 UTC
Views: 2
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