CVE-2026-101281CWE-287

CVE-2026-101281

High · published September 29, 2026

CVSS v3.1
7.3
EPSS
0%
Percentile
34.1
In the wild
Unconfirmed
What it is

A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_sp2_find_mailfrom_domain of the file libopendmarc/opendmarc_spf.c of the component SPF Macro Handler. This manipulation causes improper authentication. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: c48a74c758677fc5272a73eff15ffdbf8afda1a6. Applying a patch is the recommended action to fix this issue.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
6.9 · 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
EPSS
0.00410 · 34.1th percentile
Weakness
CWE-287 · Improper Authentication
Published
2026-09-29T05:16Z
References (8)
https://github.com/trusteddomainproject/OpenDMARC/commit/c48a74c758677fc5272a73eff15ffdbf8afda1a6 · [email protected]https://github.com/trusteddomainproject/OpenDMARC/issues/262 · [email protected]https://github.com/trusteddomainproject/OpenDMARC/pull/328 · [email protected]https://vuldb.com/cve/CVE-2026-101281 · [email protected]https://vuldb.com/submit/918284 · [email protected]https://vuldb.com/vuln/411038 · [email protected]https://vuldb.com/vuln/411038/cti · [email protected]https://xuyongzhe-vt.github.io/share/opendmarc-spf-postmaster-macro.html · [email protected]
EPSS history
Timeline
  • 02 OCT 03:41Z
    EPSS moved — → 0%
    epss
  • 29 SEP 00:45Z
    Trusted Domain Project OpenDMARC SPF Macro opendmarc_spf.c opendmarc_sp2_find_mailfrom_domain improper authentication
    cvelistv5