# CVE-2025-40905: libwww-oauth-perl: WWW::OAuth 1.000 and earlier for Perl uses the rand() function as the default source of entropy, which is not cryptog...

CVE-2025-40905 is fixed in libwww-oauth-perl on 1 platform, first by DEBIAN-CVE-2025-40905, released February 13, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-40905
- Priority: High
- CVSS: 7.3 (high)
- EPSS: 0.0029
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 13, 2026

## Description

WWW::OAuth 1.000 and earlier for Perl uses the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libwww-oauth-perl Debian 13.5 (trixie) | 1.001-1 | [DEBIAN-CVE-2025-40905](https://patchblox.com/security/data/fix/linux/debian-cve-2025-40905.md) | Feb 13, 2026 |
| Linux | libwww-oauth-perl Debian 14 | 1.001-1 | [DEBIAN-CVE-2025-40905](https://patchblox.com/security/data/fix/linux/debian-cve-2025-40905.md) | Feb 13, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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