CVE-2026-120635
HIGH
MEDIUM
Priority: 0.04
BB Relevance:
66/100
Published: 2026-11-03
Modified: 2026-11-09
First seen: 2026-11-04
Status: active
Attack Surface
Network
Low Complexity
No Interaction
Conf. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
High
I:
None
A:
High
Description
CGI versions before 5.00 for Perl allow form fields to be smuggled past proxies and WAFs via multipart parsing that differs from the RFCs. The multipart/form-data parser matches the boundary anywhere rather than at the start of a line, uses the boundary without its leading -- for some client-supplied User-Agent values, finds the Content-Disposition name and filename inside the quoted values of other parameters, and corrupts parts when the boundary nears the 4096-byte read size.
Weakness Classification (1)
References & Advisories (7)
technical-description
technical-description
release-notes
patch
patch
patch
patch