CVE-2026-100891
High
Description
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.
SeverityHigh
CVSS7.3
Exploit probability—
ProductTrusted Domain Project Opendmarc
PublishedSep 28, 2026
First seenSep 28, 2026
Weakness typeCWE-172CWE-172
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| trusted_domain_project opendmarc | 1.4.0, 1.4.1, 1.4.2 | — |
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