CPANSA-MIME-tools-2026-116267: MIME-tools vulnerability

Publisher giterlizzi Document category csaf_security_advisory
Initial release date 2026-10-28T00:00:00 Engine CSAF Perl Toolkit 0.26
Current release date 2026-10-28T00:00:00 Build Date
Current version 1 Status final
CVSS v3.1 Base Score Severity
Original language Language en
Also referred to

Vulnerability Description

MIME::Parser versions before 5.521 for Perl allow memory exhaustion via indented error messages from a truncated, deeply nested message.

Each stored parser diagnostic is indented by three spaces per nesting level. When a message nested N levels deep ends without its closing boundaries, every level logs an error at its own depth, so the stored diagnostics grow with the square of N. The defaults place no limit on nesting depth.

Vulnerabilities

CVE-2026-116267

Vulnerability Description

MIME::Parser versions before 5.521 for Perl allow memory exhaustion via indented error messages from a truncated, deeply nested message.

Each stored parser diagnostic is indented by three spaces per nesting level. When a message nested N levels deep ends without its closing boundaries, every level logs an error at its own depth, so the stored diagnostics grow with the square of N. The defaults place no limit on nesting depth.

Weakness CWE-407 : Inefficient Algorithmic Complexity

Product status

Known affected
Product Score
MIME-tools less than 5.521
CVSS Version CVSS Vector CVSS Base Score CVSS Base Severity
Fixed

giterlizzi

Namespace: https://github.com/giterlizzi/

gdt@cpan.org

References

Revision history

Version Date of the revision Summary of the revision
1 Wed Oct 28 00:00:00 2026 First release

Sharing rules

TLP:WHITE
For the TLP version see: https://www.first.org/tlp/