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Message-ID: <55aad68d-e0eb-4b2a-b01b-7678a49e7e05@oracle.com>
Date: Fri, 13 Feb 2026 09:45:41 -0800
From: Alan Coopersmith <alan.coopersmith@...cle.com>
To: oss-security@...ts.openwall.com
Subject: CVE-2025-40905: WWW::OAuth 1.000 and earlier for Perl
uses insecure rand() function for cryptographic functions
https://lists.security.metacpan.org/cve-announce/msg/36977848/ warns:
> ========================================================================
> CVE-2025-40905 CPAN Security Group
> ========================================================================
>
> CVE ID: CVE-2025-40905
> Distribution: WWW-OAuth
> Versions: through 1.000
>
> MetaCPAN: https://metacpan.org/dist/WWW-OAuth
>
> WWW::OAuth 1.000 and earlier for Perl uses insecure rand() function for
> cryptographic functions
>
> 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.
>
> Problem types
> -------------
> - CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator
> (PRNG)
>
> Solutions
> ---------
> Upgrade to WWW::OAuth 1.001 or higher
>
> References
> ----------
> https://perldoc.perl.org/functions/rand
> https://security.metacpan.org/docs/guides/random-data-for-security.html
> https://metacpan.org/release/DBOOK/WWW-OAuth-1.000/source/lib/WWW/OAuth.pm#L86
>
> Credits
> -------
> Robert Rothenberg (RRWO), finder
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