CVE-2025-40916 Information

Description

Mojolicious::Plugin::CaptchaPNG version 1.05 for Perl uses a weak random number source for generating the captcha.

That version uses the built-in rand() function for generating the captcha text as well as image noise which is insecure.

Reference

https://metacpan.org/pod/perlfunc#rand https://metacpan.org/release/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.04/diff/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.05/lib/Mojolicious/Plugin/CaptchaPNG.pm https://metacpan.org/release/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.06/changes https://security.metacpan.org/docs/guides/random-data-for-security.html

Related CNNVD

CNNVD-202506-1878 (Published: 2025-06-16)