CVE-2026-101016
Trusted Domain Project OpenDMARC opendmarc_policy.c opendmarc_policy_parse_dmarc exceptional condition
- State
- Published
- Severity
- 6.9 Medium
- Published
- Sep 28, 2026
- Updated
- Sep 28, 2026
- Reserved
- Sep 27, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | 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/E:P | VulDB |
| 3.1 | 6.5 Medium | 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 | VulDB |
| 3.0 | 6.5 Medium | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:C | VulDB |
| 2.0 | 6.4 Medium | AV:N/AC:L/Au:N/C:N/I:P/A:P/E:POC/RL:ND/RC:C | VulDB |
Weaknesses
- CWE-755 Handling of Exceptional Conditions
Affected Products
| Product | Versions |
|---|---|
OpenDMARCTrusted Domain Project |
|
References
- VDB-410886 | Trusted Domain Project OpenDMARC opendmarc_policy.c opendmarc_policy_parse_dmarc exceptional conditionvdb-entrytechnical-description
- VDB-410886 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-101016 | CVE Analysis and Reportthird-party-advisory
- Submit #918242 | The Trusted Domain Project OpenDMARC 1.4.2 Improper Authenticationthird-party-advisory
- https://xuyongzhe-vt.github.io/share/opendmarc-bad-tag-drops-policy.htmlexploit
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