Vulnerability Description
MIME::Field::ParamVal versions before 5.521 for Perl allow CPU exhaustion via unclosed comments in header parameters. The comment pattern used to parse Content-Type and Content-Disposition parameters scans from each "(" to the next ")". In a field with no ")", every "(" scans to the end of the header and fails, so parsing takes time quadratic in the header length. The field is parsed again on each attribute lookup, several times per MIME entity. A 40 KB header takes about 7 seconds to parse once.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-116268?
CVE-2026-116268 is a documented vulnerability. MIME::Field::ParamVal versions before 5.521 for Perl allow CPU exhaustion via unclosed comments in header parameters. The comment pattern used to parse Content-Type and Content-Disposition parameters...
How severe is CVE-2026-116268?
CVSS scoring is not yet available for CVE-2026-116268. Check NVD for updates.
Is there a patch for CVE-2026-116268?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.