CVE-2026-120632
MEDIUM
MEDIUM
Priority: 0.03
BB Relevance:
63/100
Published: 2026-11-04
Modified: 2026-11-09
First seen: 2026-11-04
Status: active
Attack Surface
Network
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
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.
Weakness Classification (1)
References & Advisories (3)
technical-description
release-notes
patch