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Vulnerability Intelligence

CVE-2025-40916

CRITICAL9.1

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

Published Jun 16, 2025

Modified 7 months ago

No fix available

Details

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.

References

WEBhttps://metacpan.org/pod/perlfunc#rand WEBhttps://metacpan.org/release/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.04/diff/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.05/lib/Mojolicious/Plugin/CaptchaPNG.pm WEBhttps://metacpan.org/release/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.06/changes WEBhttps://security.metacpan.org/docs/guides/random-data-for-security.html ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2025-40916

CVSS Analysis

CVSS v3.1

9.1

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

NoneA:N

9.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness Type (CWE)

Other

Ecosystems

Timeline

PublishedJun 16, 2025

ModifiedJun 16, 2025

CVE-2025-40916 | Mondoo Vulnerability Intelligence