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.

Affected Software (2)

VendorProductVersion
— — 0 < 5.00
— — 0 < 5.00

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.43%
Raw Score 0.004310
Percentile 37.8%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00431
2026-11-13
0.00431
2026-11-12
0.00431
2026-11-10
0.00431
2026-11-09
0.00191
2026-11-08
0.00191
2026-11-07
0.00191
2026-11-06
0.00191
2026-11-05
0.00191
2026-11-04
0.00191

Intelligence Sources

mitre ref →
nvd ref →