CVE-2026-101016

MEDIUM 6.5

Trusted Domain Project OpenDMARC opendmarc_policy.c opendmarc_policy_parse_dmarc exceptional condition

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2. This affects the function opendmarc_policy_parse_dmarc in the library libopendmarc/opendmarc_policy.c. The manipulation of the argument fo/rf/ri/pct/sp/adkim/aspf/rua/ruf leads to handling of exceptional conditions. Remote exploitation of the attack is possible. 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.

CWE	CWE-755
Vendor	trusted domain project
Product	opendmarc
Published	Sep 28, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Trusted Domain Project / OpenDMARC

1.4.0 1.4.1 1.4.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/410886 vuldb.com: https://vuldb.com/vuln/410886/cti vuldb.com: https://vuldb.com/cve/CVE-2026-101016 vuldb.com: https://vuldb.com/submit/918242 xuyongzhe-vt.github.io: https://xuyongzhe-vt.github.io/share/opendmarc-bad-tag-drops-policy.html

Credits

🔍 yongzhe_xu (VulDB User) VulDB CNA Team