CVE-2026-100891High· 7.3▾ MidnightPoC availableA vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this issue is the function opendmarc_policy_query_dmarc in the library libopendmarc/opendmarc_policy.c of the component Internationalized Domain …
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 40.2 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 29.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
Exploit / PoC code exists
0.3% → 0.3%
A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this issue is the function opendmarc_policy_query_dmarc in the library libopendmarc/opendmarc_policy.c of the component Internationalized Domain Name Handler. Such manipulation leads to encoding error. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-101280High· 7.3A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2
CVE-2026-101281High· 7.3A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2
CVE-2026-101279Medium· 6.5A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2
CVE-2026-101278Medium· 4.3A weakness has been identified in Trusted Domain Project OpenDMARC up to 1.4.2
CVE-2026-100890Medium· 5.3A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2
CVE-2026-100895Medium· 5.3A security flaw has been discovered in Trusted Domain Project OpenARC up to 1.0.0.Beta1