A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. (CVE-2026-101015)
Description
A vulnerability exists in Trusted Domain Project OpenDMARC up to version 1.4.2 in the Domain Handler component's policy.c file. This flaw allows improper validation of unsafe equivalence in input, potentially exploitable remotely. An exploit has been published, but the vendor has not responded or provided a fix. The issue affects multiple specific versions of OpenDMARC.
CVSS v3.1
Score 7.3high
Affected software
pkg:deb/ubuntu/opendmarc?arch=source&distro=esm-apps/xenialpkg:deb/ubuntu/opendmarc?arch=source&distro=bionicpkg:deb/ubuntu/opendmarc?arch=source&distro=focalpkg:deb/ubuntu/opendmarc?arch=source&distro=jammypkg:deb/ubuntu/opendmarc?arch=source&distro=noblepkg:deb/ubuntu/opendmarc?arch=source&distro=stonkingpkg:deb/ubuntu/opendmarc?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-101015 describes a security flaw in the Trusted Domain Project OpenDMARC software, specifically in the Domain Handler component's policy.c file. The vulnerability involves improper validation of unsafe equivalence in input, which can be manipulated remotely. This could lead to impacts on confidentiality, integrity, and availability as indicated by the CVSS vector. Exploit code is publicly available, and the vendor has not issued a response or patch.
Potential Impact
The vulnerability allows remote attackers to manipulate input leading to improper validation, potentially compromising confidentiality, integrity, and availability of the affected system. The CVSS score of 7.3 (medium severity) reflects these impacts. No known active exploitation in the wild has been reported yet.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded or released a fix, users should monitor official channels for updates and consider applying any community or distribution-specific mitigations if available.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-101015
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:Pro:16.04:LTS","Ubuntu:18.04:LTS","Ubuntu:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:26.10","Ubuntu:26.04:LTS"]
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad3f5052cdf04f656657bde
Added to database: 10/17/2026, 22:21:57 UTC
Last enriched: 10/17/2026, 22:50:20 UTC
Last updated: 10/17/2026, 22:50:20 UTC
Views: 2
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