What’s Vulnerable › Vulnerabilities

CVE-2025-40915: Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF tokens

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-06-11 · updated 2026-06-17
• Weakness: CWE-338

Description

Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF tokens. That version of the module generates tokens as an MD5 of the process id, the current time, and a single call to the built-in rand() function.

Affected products

• GRYPHON Mojolicious::Plugin::CSRF: 1.03

References

• https://metacpan.org/release/GRYPHON/Mojolicious-Plugin-CSRF-1.04/changes
• https://metacpan.org/release/GRYPHON/Mojolicious-Plugin-CSRF-1.04/diff/GRYPHON/Mojolicious-Plugin-CSRF-1.03

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