What’s Vulnerable › Vulnerabilities

CVE-2026-101278: Trusted Domain Project OpenDMARC PSL Wildcard opendmarc_tld.c : opendmarc_get_tld origin validation

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-29 · updated 2026-10-01
• Weakness: CWE-345

Description

A weakness has been identified in Trusted Domain Project OpenDMARC up to 1.4.2. This affects the function opendmarc_get_tld of the file libopendmarc/opendmarc_tld.c : of the component PSL Wildcard Handler. Executing a manipulation can lead to origin validation error. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Trusted Domain Project OpenDMARC: 1.4.0, 1.4.1, 1.4.2

References

• https://vuldb.com/cve/CVE-2026-101278
• https://vuldb.com/submit/918273
• https://vuldb.com/vuln/411035
• https://vuldb.com/vuln/411035/cti
• https://xuyongzhe-vt.github.io/share/opendmarc-psl-wildcard-orgdomain.html

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