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.
CVSS
No CVSS.
References
Configurations
No configuration.
History
28 Oct 2026, 18:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-10-28 18:17
Updated : 2026-10-29 15:11
NVD link : CVE-2026-116268
Mitre link : CVE-2026-116268
CVE.ORG link : CVE-2026-116268
JSON object : View
Products Affected
No product.
CWE
CWE-1333
Inefficient Regular Expression Complexity
