Riskcovery

CVE-2026-120632

CGI versions before 5.00 for Perl allow CPU exhaustion via a backtracking regex on the XForms multipart/related Content-Type

State
Published
Severity
Not scored
Published
Nov 3, 2026
Updated
Nov 3, 2026
Reserved
Nov 2, 2026

Read the record on cve.org

Description

CGI versions before 5.00 for Perl allow CPU exhaustion via a backtracking regex on the XForms multipart/related Content-Type.

When a POST Content-Type contains multipart/related, the boundary and start parameters are extracted with an unanchored pattern that puts .+ on either side of the boundary capture, which backtracks in cubic time on a header that does not match. No request body is needed.

Scores

The record has no CVSS score.

Weaknesses

  • CWE-1333 Inefficient Regular Expression Complexity

Affected Products

ProductVersions
CGI
  • before 5.00Affected

References

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