Bug 2501787

Summary: CVE-2026-13082 perl-GD-SecurityImage: the rand function is used to generate secrets [fedora-all]
Product: [Fedora] Fedora Reporter: Guilherme de Almeida Suckevicz <gsuckevi>
Component: perl-GD-SecurityImageAssignee: Emmanuel Seyman <emmanuel>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: emmanuel, perl-devel, xavier
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["2def2d30-1ae7-43f2-bd37-fde4440b46e0"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2501717    

Description Guilherme de Almeida Suckevicz 2026-07-17 16:05:39 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

GD::SecurityImage versions through 1.75 for Perl use rand to generate secrets.

The random method creates the challenge text used for the CAPTCHA by sampling characters from an array using Perl's built-in rand function, and generates a (by default) six-character string.

The built-in rand function is unsuitable for security applications because it is predictable and reversible.