Vulnerability in Trusted Domain Project Opendkim
CVE-2026-101277
A security flaw has been discovered in Trusted Domain Project OpenDKIM up to 2.11.0. The impacted element is the function dkim_process_set of the file dkim.c of the component Tag Tokenizer. Performing a manipulation results in use of less trusted source. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Published .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Trusted Domain Project Opendkim — versions 2.0, 2.1, 2.10
Weakness classification (CWE)
References
- vuldb.com/vuln/411034 (technical-description, vdb-entry)
- vuldb.com/vuln/411034/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-101277 (third-party-advisory)
- vuldb.com/submit/918270 (third-party-advisory)
- xuyongzhe-vt.github.io/share/opendkim-tag-parser-desync.html (exploit)
Frequently asked questions
- What is CVE-2026-101277?
- CVE-2026-101277 is a medium-severity vulnerability in Trusted Domain Project Opendkim, classified under CWE-348. CVSS score: 6.5/10. Published 2026-09-29.
- How severe is CVE-2026-101277?
- Medium severity. CVSS v3 base score is 6.5 out of 10.