# Trusted Domain Project OpenDMARC vulnerabilities

Source: https://junglewise.ai/threats/technologies/opendmarc  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/opendmarc.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 10 vulnerabilities in Trusted Domain Project OpenDMARC: 0 in the last 7 days and 10 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-101281, was published on 29 September 2026. Nothing in the last four weeks, down from 10 vulnerabilities in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 10
- All time: 10 (0 critical, 0 exploited in the wild)

## About Trusted Domain Project OpenDMARC

Library implementation of DMARC (Domain-based Message Authentication, Reporting and Conformance).

## Latest Trusted Domain Project OpenDMARC vulnerabilities

- [CVE-2026-101281: OpenDMARC improper authentication in SPF macro handler](https://junglewise.ai/threats/cve-2026-101281-a-flaw-has-been-found-in-trusted-domain-project-opendmarc-up-to) (high, CVSS 7.3, published 29 Sep 2026)
- [CVE-2026-101280: Trusted Domain Project OpenDMARC authentication bypass in Multi-Record Set Handler](https://junglewise.ai/threats/cve-2026-101280-a-vulnerability-was-detected-in-trusted-domain-project-opendmarc) (high, CVSS 7.3, published 29 Sep 2026)
- [CVE-2026-101279: Trusted Domain Project OpenDMARC integer overflow in DMARC parser](https://junglewise.ai/threats/cve-2026-101279-a-security-vulnerability-has-been-detected-in-trusted-domain) (medium, CVSS 6.5, published 29 Sep 2026)
- [CVE-2026-101278: Trusted Domain Project OpenDMARC origin validation error in PSL Wildcard Handler](https://junglewise.ai/threats/cve-2026-101278-a-weakness-has-been-identified-in-trusted-domain-project) (medium, CVSS 4.3, published 29 Sep 2026)
- [CVE-2026-101017: Trusted Domain Project OpenDMARC exception handling in strcasecmp](https://junglewise.ai/threats/cve-2026-101017-a-vulnerability-was-found-in-trusted-domain-project-opendmarc-up) (medium, CVSS 6.5, published 28 Sep 2026)
- [CVE-2026-101016: Trusted Domain Project OpenDMARC exception handling in DMARC policy parsing](https://junglewise.ai/threats/cve-2026-101016-a-vulnerability-has-been-found-in-trusted-domain-project) (medium, CVSS 6.5, published 28 Sep 2026)
- [CVE-2026-101015: Trusted Domain Project OpenDMARC input validation in policy.c](https://junglewise.ai/threats/cve-2026-101015-a-flaw-has-been-found-in-trusted-domain-project-opendmarc-up-to) (high, CVSS 7.3, published 28 Sep 2026)
- [CVE-2026-101014: OpenDMARC off-by-one buffer overflow in opendmarc_util_cleanup](https://junglewise.ai/threats/cve-2026-101014-a-vulnerability-was-detected-in-trusted-domain-project-opendmarc) (high, CVSS 7.3, published 28 Sep 2026)
- [CVE-2026-100891: Trusted Domain Project OpenDMARC encoding error in policy query](https://junglewise.ai/threats/cve-2026-100891-a-vulnerability-has-been-found-in-trusted-domain-project) (high, CVSS 7.3, published 28 Sep 2026)
- [CVE-2026-100890: OpenDMARC null pointer dereference in SPF parser](https://junglewise.ai/threats/cve-2026-100890-a-flaw-has-been-found-in-trusted-domain-project-opendmarc-up-to) (medium, CVSS 5.3, published 28 Sep 2026)

## Most severe Trusted Domain Project OpenDMARC vulnerabilities

- [CVE-2026-101281: OpenDMARC improper authentication in SPF macro handler](https://junglewise.ai/threats/cve-2026-101281-a-flaw-has-been-found-in-trusted-domain-project-opendmarc-up-to) (high, CVSS 7.3, published 29 Sep 2026)
- [CVE-2026-101280: Trusted Domain Project OpenDMARC authentication bypass in Multi-Record Set Handler](https://junglewise.ai/threats/cve-2026-101280-a-vulnerability-was-detected-in-trusted-domain-project-opendmarc) (high, CVSS 7.3, published 29 Sep 2026)
- [CVE-2026-101015: Trusted Domain Project OpenDMARC input validation in policy.c](https://junglewise.ai/threats/cve-2026-101015-a-flaw-has-been-found-in-trusted-domain-project-opendmarc-up-to) (high, CVSS 7.3, published 28 Sep 2026)
- [CVE-2026-101014: OpenDMARC off-by-one buffer overflow in opendmarc_util_cleanup](https://junglewise.ai/threats/cve-2026-101014-a-vulnerability-was-detected-in-trusted-domain-project-opendmarc) (high, CVSS 7.3, published 28 Sep 2026)
- [CVE-2026-100891: Trusted Domain Project OpenDMARC encoding error in policy query](https://junglewise.ai/threats/cve-2026-100891-a-vulnerability-has-been-found-in-trusted-domain-project) (high, CVSS 7.3, published 28 Sep 2026)
- [CVE-2026-101279: Trusted Domain Project OpenDMARC integer overflow in DMARC parser](https://junglewise.ai/threats/cve-2026-101279-a-security-vulnerability-has-been-detected-in-trusted-domain) (medium, CVSS 6.5, published 29 Sep 2026)
- [CVE-2026-101017: Trusted Domain Project OpenDMARC exception handling in strcasecmp](https://junglewise.ai/threats/cve-2026-101017-a-vulnerability-was-found-in-trusted-domain-project-opendmarc-up) (medium, CVSS 6.5, published 28 Sep 2026)
- [CVE-2026-101016: Trusted Domain Project OpenDMARC exception handling in DMARC policy parsing](https://junglewise.ai/threats/cve-2026-101016-a-vulnerability-has-been-found-in-trusted-domain-project) (medium, CVSS 6.5, published 28 Sep 2026)
- [CVE-2026-100890: OpenDMARC null pointer dereference in SPF parser](https://junglewise.ai/threats/cve-2026-100890-a-flaw-has-been-found-in-trusted-domain-project-opendmarc-up-to) (medium, CVSS 5.3, published 28 Sep 2026)
- [CVE-2026-101278: Trusted Domain Project OpenDMARC origin validation error in PSL Wildcard Handler](https://junglewise.ai/threats/cve-2026-101278-a-weakness-has-been-identified-in-trusted-domain-project) (medium, CVSS 4.3, published 29 Sep 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 10 vulnerabilities in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 10 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Trusted Domain Project technologies

- [Trusted Domain Project OpenDKIM](https://junglewise.ai/threats/technologies/opendkim): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Trusted Domain Project OpenDMARC vulnerabilities", https://junglewise.ai/threats/technologies/opendmarc, 9 November 2026.