CVEvulnerability

CVE-2025-40916

9.1 CRITICAL Published 2025-06-16 Modified 2026-06-17 Official page ↗

Status: Deferred
Published: 2025-06-16
Last modified: 2026-06-17
Assigner: 9b29abf9-4ab0-4765-b253-1875cd9b441e
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0): 9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses: CWE-338, CWE-804

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.

Weakness · CWE (2)

CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) weakness
CWE-804 Guessable CAPTCHA weakness

References

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

CVE-2025-40916

Description

Related

Weakness · CWE (2)

References