# CVE-2025-40920: libcatalyst-authentication-credential-http-perl: Catalyst::Authentication::Credential::HTTP versions 1.018 and earlier for Perl generate nonces using the Perl Data::U...

CVE-2025-40920 is fixed in libcatalyst-authentication-credential-http-perl on 1 platform by DEBIAN-CVE-2025-40920 (version 1.018-4), released August 11, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-40920
- Priority: High
- CVSS: 8.6 (high)
- EPSS: 0.0047
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 11, 2025

## Description

Catalyst::Authentication::Credential::HTTP versions 1.018 and earlier for Perl generate nonces using the Perl Data::UUID library.   *  Data::UUID does not use a strong cryptographic source for generating UUIDs.   *  Data::UUID returns v3 UUIDs, which are generated from known information and are unsuitable for security, as per RFC 9562.   *  The nonces should be generated from a strong cryptographic source, as per RFC 7616.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libcatalyst-authentication-credential-http-perl Debian 14 | 1.018-4 | [DEBIAN-CVE-2025-40920](https://patchblox.com/security/data/fix/linux/debian-cve-2025-40920.md) | Aug 11, 2025 |

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