CVE-2026-101014
highA vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2.
A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_util_cleanup in the library libopendmarc/opendmarc_util.c of the component DMARC Record Parser. Performing a manipulation results in off-by-one. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named b3b1da9264bc80324094a27c71e7369bdedc62ae. To fix this issue, it is recommended to deploy a patch.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bd... cna@vuldb.com
- https://github.com/trusteddomainproject/OpenDMARC/pull/188 cna@vuldb.com
- https://github.com/trusteddomainproject/OpenDMARC/pull/344 cna@vuldb.com
- https://vuldb.com/cve/CVE-2026-101014 cna@vuldb.com
- https://vuldb.com/submit/917100 cna@vuldb.com
- https://vuldb.com/vuln/410884 cna@vuldb.com
- https://vuldb.com/vuln/410884/cti cna@vuldb.com
- https://weitongli.com/share/opendmarc-cleanup-off-by-one.html cna@vuldb.com