CVE-2026-100891

7.3 HIGH

Published 2026-09-28 · Updated 2026-09-28

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Weaknesses

CWE-172

All references

https://vuldb.com/cve/CVE-2026-100891
https://vuldb.com/submit/917215
https://vuldb.com/vuln/410841
https://vuldb.com/vuln/410841/cti
https://weitongli.com/share/opendmarc-ulabel-not-converted.html

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.