Bug 2542266 (CVE-2026-100891) - CVE-2026-100891 opendmarc: Trusted Domain Project OpenDMARC Internationalized Domain Name opendmarc_policy.c opendmarc_policy_query_dmarc encoding error
Summary: CVE-2026-100891 opendmarc: Trusted Domain Project OpenDMARC Internationalized...
Keywords:
Status: NEW
Alias: CVE-2026-100891
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2542282 2542283
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-28 00:51 UTC by OSIDB Bzimport
Modified: 2026-09-28 02:55 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-09-28 00:51:25 UTC 
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.
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