CVE-2026-101016

medium

Description

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.

References

https://xuyongzhe-vt.github.io/share/opendmarc-bad-tag-drops-policy.html

https://vuldb.com/vuln/410886/cti

https://vuldb.com/vuln/410886

https://vuldb.com/submit/918242

https://vuldb.com/cve/CVE-2026-101016

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-88176

Details

Source: Mitre, NVD

Published: 2026-09-28

Updated: 2026-09-28

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 6.5

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

Severity: Medium

CVSS v4

Base Score: 6.9

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00324