RLSA-2026:99849: Important: perl-CGI security update
CGI.pm is a stable, complete and mature solution for processing and preparing HTTP requests and responses. Major features including processing form submissions, file uploads, reading and writing cookies, query string generation and manipulation, and processing and preparing HTTP headers. Some HTML generation utilities are included as well. CGI.pm performs very well in in a vanilla CGI.pm environment and also comes with built-in support for modperl and modperl2 as well as FastCGI.
Security Fix(es):
perl-cgi: perl-cgi: Denial of Service via unenforced request and upload limits (CVE-2026-120650)
perl-cgi: perl-cgi: arbitrary file write via unsanitized upload filenames (CVE-2026-120641)
perl-cgi: perl-cgi: Security feature bypass via untainted request parameters (CVE-2026-120642)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
rocky-linux/perl-CGIto a version that resolves this vulnerability.Fixed in 0:4.38-3.el8_10
Event History
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
Does exploitation require an authenticated account or user interaction?
The advisory rates the issues as network-accessible, requiring no privileges and no user interaction. It also rates attack complexity as high.
Which application functions should be prioritized for review?
Prioritize applications that use CGI.pm to process HTTP requests, especially form submissions and file uploads. The listed issues involve request and upload limits, upload filenames, and request-parameter taint handling.
Can I determine whether an installed package version is affected from this advisory data?
No. The supplied advisory data does not list affected versions, fixed versions, or package build identifiers.