CVE-2026-116269 Affecting libmime-tools-perl package, versions <5.522-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-LIBMIMETOOLSPERL-21758149
- published28 Oct 2026
- disclosed28 Oct 2026
Introduced: 28 Oct 2026
NewCVE-2026-116269 (opens in a new tab)How to fix?
Upgrade Debian:unstable libmime-tools-perl to version 5.522-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libmime-tools-perl package and not the libmime-tools-perl package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
MIME::Field::ParamVal versions before 5.521 for Perl turn an RFC 2231 filename with a hyphenated language tag into an empty recommended filename.
A parameter such as filename*=utf-8'en-US'payload.exe is converted to an encoded word with the language tag appended to the charset. The decoder strips the language suffix only when it is a single word, so it cannot resolve the charset UTF-8*EN-US and returns an empty string. The recommended_filename() method returns that empty string rather than falling back to the name parameter.
Other mail readers return payload.exe. A remote sender can get an attachment past a policy that checks file extensions on the recommended filename.