CVE-2026-101014
A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2
- Risk score
- 53/100
- CVSS
- 7.3 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 28 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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. T…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.3 high
- Remotely exploitable without logging in
References
- https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae
- https://github.com/trusteddomainproject/OpenDMARC/pull/188
- https://github.com/trusteddomainproject/OpenDMARC/pull/344
- https://vuldb.com/cve/CVE-2026-101014
- https://vuldb.com/submit/917100
- https://vuldb.com/vuln/410884
- https://vuldb.com/vuln/410884/cti
- https://weitongli.com/share/opendmarc-cleanup-off-by-one.html
Original description
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.
Last activity 28 Sep 2026. Patch Forecast updates every hour.