What’s Vulnerable › Vulnerabilities

CVE-2026-101277: Trusted Domain Project OpenDKIM Tag Tokenizer dkim.c dkim_process_set less trusted source

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-29 · updated 2026-09-29
• Weakness: CWE-348

Description

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.

Affected products

• Trusted Domain Project OpenDKIM: 2.0, 2.1, 2.2, 2.3, 2.4, 2.5 (+6)

References

• https://vuldb.com/cve/CVE-2026-101277
• https://vuldb.com/submit/918270
• https://vuldb.com/vuln/411034
• https://vuldb.com/vuln/411034/cti
• https://xuyongzhe-vt.github.io/share/opendkim-tag-parser-desync.html

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