CVE-2026-101015
Trusted Domain Project OpenDMARC policy.c improper validation of unsafe equivalence in input
- State
- Published
- Severity
- 6.9 Medium
- Published
- Sep 28, 2026
- Updated
- Oct 1, 2026
- Reserved
- Sep 27, 2026
Description
A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this issue is some unknown functionality of the file policy.c of the component Domain Handler. Executing a manipulation can lead to improper validation of unsafe equivalence in input. The attack may be launched remotely. The exploit has been published 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:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 7.3 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C | VulDB |
| 3.0 | 7.3 High | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C | VulDB |
| 2.0 | 7.5 High | AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
OpenDMARCTrusted Domain Project |
|
References
- VDB-410885 | Trusted Domain Project OpenDMARC policy.c improper validation of unsafe equivalence in inputvdb-entry
- VDB-410885 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-101015 | CVE Analysis and Reportthird-party-advisory
- Submit #917216 | The Trusted Domain Project OpenDMARC 1.4.2 Improper Authenticationthird-party-advisory
- https://weitongli.com/share/opendmarc-unicode-dot-bypass.htmlexploit
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