A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. (CVE-2026-101279)
A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. This impacts an unknown function of the file libopendmarc/opendmarc_policy.c of the component DMARC Parser. The manipulation of the argument pct leads to integer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
AI Analysis
Technical Summary
CVE-2026-101279 describes an integer overflow vulnerability in Trusted Domain Project OpenDMARC up to version 1.4.2. The issue arises from improper handling of the 'pct' argument in the DMARC Parser component (libopendmarc/opendmarc_policy.c). This flaw allows remote attackers to trigger an integer overflow, potentially leading to denial of service or other impacts related to integrity and availability. The vulnerability has been publicly disclosed, but no vendor response or patch information is available.
Potential Impact
The vulnerability can be exploited remotely without authentication, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The impact affects integrity and availability (I:L, A:L) but not confidentiality. Exploitation could lead to disruption of service or manipulation of DMARC processing. No confirmed active exploitation in the wild is reported. The vendor has not provided a fix or guidance.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded and no patch links are available, users should monitor official Trusted Domain Project channels for updates. Until a fix is released, consider mitigating exposure by restricting access to the vulnerable service or applying compensating controls relevant to DMARC processing.
A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. (CVE-2026-101279)
Description
A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. This impacts an unknown function of the file libopendmarc/opendmarc_policy.c of the component DMARC Parser. The manipulation of the argument pct leads to integer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS v3.1
Score 6.5medium
Affected software
pkg:github/trusteddomainproject/opendmarcRun 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-2026-101279 describes an integer overflow vulnerability in Trusted Domain Project OpenDMARC up to version 1.4.2. The issue arises from improper handling of the 'pct' argument in the DMARC Parser component (libopendmarc/opendmarc_policy.c). This flaw allows remote attackers to trigger an integer overflow, potentially leading to denial of service or other impacts related to integrity and availability. The vulnerability has been publicly disclosed, but no vendor response or patch information is available.
Potential Impact
The vulnerability can be exploited remotely without authentication, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The impact affects integrity and availability (I:L, A:L) but not confidentiality. Exploitation could lead to disruption of service or manipulation of DMARC processing. No confirmed active exploitation in the wild is reported. The vendor has not provided a fix or guidance.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded and no patch links are available, users should monitor official Trusted Domain Project channels for updates. Until a fix is released, consider mitigating exposure by restricting access to the vulnerable service or applying compensating controls relevant to DMARC processing.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-3h24-2ph8-4r6f
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-101279"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6abb417cf7a7c54106cc2e42
Added to database: 09/29/2026, 04:41:32 UTC
Last enriched: 09/29/2026, 04:43:39 UTC
Last updated: 09/29/2026, 18:20:25 UTC
Views: 9
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