CVE-2026-101014

NameCVE-2026-101014
DescriptionA 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
opendmarc (PTS)bookworm1.4.2-2vulnerable
trixie1.4.2-5vulnerable
forky, sid1.4.2-5.1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opendmarcsource(unstable)(unfixed)

Notes

https://github.com/trusteddomainproject/OpenDMARC/pull/188
https://github.com/trusteddomainproject/OpenDMARC/pull/344

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