CVE-2026-120635
perl-CGI: perl-CGI: Security control bypass via improper multipart parsing
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · November 4, 2026
Updated · November 4, 2026
Description
A flaw was found in perl-CGI. Due to discrepancies in how multipart form-data requests are parsed compared to standard specifications, a remote attacker can smuggle form fields past intermediate proxies and Web Application Firewalls (WAFs). By submitting specially crafted multipart requests, an attacker can bypass security inspections to deliver uninspected input or corrupt form data processed by backend applications.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE-444 · Inconsistent Interpretation of HTTP Requests