PT-2025-25544 · Unknown · Mojolicious::Plugin::Captchapng

Published 2025-06-16 · Updated 2025-06-16 · CVE-2025-40916

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions Mojolicious::Plugin::CaptchaPNG version 1.05

Description The issue concerns the use of a weak random number source for generating the captcha in Mojolicious::Plugin::CaptchaPNG for Perl. Specifically, version 1.05 utilizes the built-in rand() function to generate both the captcha text and image noise, which is insecure.

Recommendations For Mojolicious::Plugin::CaptchaPNG version 1.05, consider updating to a newer version that addresses the weak random number source issue. As a temporary workaround, consider disabling the use of the rand() function for generating captcha text and image noise until a patch is available. Restrict access to the captcha generation functionality to minimize the risk of exploitation.

Fix

Weakness Enumeration

CWE-804

CWE-338

Related Identifiers

CVE-2025-40916

Affected Products

Mojolicious::Plugin::Captchapng

References · 10

• https://nvd.nist.gov/vuln/detail/CVE-2025-40916 · Security Note
• https://twitter.com/CVEnew/status/1934570402594050440 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1934587270243160089 · Twitter Post
• https://t.me/cvetracker/26300 · Telegram Post
• https://metacpan.org/release/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.04/diff/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.05/lib/Mojolicious/Plugin/CaptchaPNG.pm · Note
• https://metacpan.org/pod/perlfunc#rand · Note
• https://security.metacpan.org/docs/guides/random-data-for-security.html · Note
• https://t.me/cvenotify/125761 · Telegram Post
• https://t.me/latest_high_impact_cve/2674 · Telegram Post
• https://metacpan.org/release/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.06/changes · Note