Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-101280— Trusted Domain Project OpenDMARC Multi-Record Set opendmarc_policy_query_dmarc authentication spoofing

Quick assessment

Affected
Trusted Domain Project OpenDMARC
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Trusted Domain Project OpenDMARC 1.4.2 及更早版本中发现了一个漏洞。受影响的是“多记录集处理程序”（Multi-Record Set Handler）组件中的 函数。该漏洞可通过伪造方式实现身份验证绕过。攻击者可远程执行此漏洞利用。目前该漏洞利用代码已公开，可能被恶意使用。厂商已提前收到此漏洞披露通知，但至今未作出任何回应。

CVSS 7.3 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-101280

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Trusted Domain Project OpenDMARC Multi-Record Set opendmarc_policy_query_dmarc authentication spoofing
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected is the function opendmarc_policy_query_dmarc of the component Multi-Record Set Handler. The manipulation results in authentication bypass by spoofing. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Trusted Domain Project OpenDMARC 1.4.0 cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-101280

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-101280

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-101280 (1)

Other References for CVE-2026-101280 (4)

Same Patch Batch · Trusted Domain Project · 2026-09-29 · 4 CVEs total

CVE-2026-101281 7.3 HIGH Trusted Domain Project OpenDMARC SPF Macro opendmarc_spf.c opendmarc_sp2_find_mailfrom_dom
CVE-2026-101279 6.5 MEDIUM Trusted Domain Project OpenDMARC opendmarc_policy.c integer overflow
CVE-2026-101278 4.3 MEDIUM Trusted Domain Project OpenDMARC PSL Wildcard opendmarc_tld.c : opendmarc_get_tld origin v

IV. Related Vulnerabilities

Same product: OpenDMARC
Same vendor: Trusted Domain Project
Same weakness: CWE-290

V. Comments for CVE-2026-101280

No comments yet

Leave a comment