CVE-2026-101014
6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Trusted Domain Project | OpenDMARC | 1.4.0 | affected |
| Trusted Domain Project | OpenDMARC | 1.4.1 | affected |
| Trusted Domain Project | OpenDMARC | 1.4.2 | affected |
Weaknesses
- CWE-193: Off-by-One
- CWE-189: Numeric Error
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: yes
- Technical Impact: partial
References
- https://vuldb.com/vuln/410884
- https://vuldb.com/vuln/410884/cti
- https://vuldb.com/cve/CVE-2026-101014
- https://vuldb.com/submit/917100
- https://github.com/trusteddomainproject/OpenDMARC/pull/188
- https://github.com/trusteddomainproject/OpenDMARC/pull/344
- https://weitongli.com/share/opendmarc-cleanup-off-by-one.html
- https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae
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