CVE-2026-101278

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.13% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 2.3% of scored records. A rank, not a probability.

NVD base score

2.1 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-10-01.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-29 00:00Z1 MO AGO

Last updated

2026-10-01 15:23Z27 DAYS AGO

Reserved

2026-09-28

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-345Insufficient Verification of Data AuthenticityClass
• CWE-346Origin Validation ErrorClass

Data version

5.2

Document digest

0ed4af0f2a565c7d2fe025054a603a571b104536c21e0f833edc20aea50ec16f

• vuldb.comVDB-411035 | Trusted Domain Project OpenDMARC PSL Wildcard opendmarc_tld.c : opendmarc_get_tld origin validationhttps://vuldb.com/vuln/411035vdb-entrytechnical-description
• vuldb.comVDB-411035 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/411035/ctisignaturepermissions-required
• vuldb.comCVE-2026-101278 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-101278third-party-advisory
• vuldb.comSubmit #918273 | The Trusted Domain Project OpenDMARC 1.4.2 Improper Authenticationhttps://vuldb.com/submit/918273third-party-advisory
• xuyongzhe-vt.github.iohttps://xuyongzhe-vt.github.io/share/opendmarc-psl-wildcard-orgdomain.htmlexploit