What’s Vulnerable › Vulnerabilities

CVE-2025-40920: Catalyst::Authentication::Credential::HTTP versions 1.018 and earlier for Perl use insecurely generated nonces

• Severity: high (CVSS 8.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-11 · updated 2026-06-17
• Weakness: CWE-338

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.

Affected products

• ETHER Catalyst::Authentication::Credential::HTTP: from 0.06 through 1.018

References

• https://datatracker.ietf.org/doc/html/rfc7616#section-5.12
• https://datatracker.ietf.org/doc/html/rfc9562#name-security-considerations
• https://github.com/perl-catalyst/Catalyst-Authentication-Credential-HTTP/commit/ad2c03aad95406db4ce35dfb670664ebde004c18
• https://github.com/perl-catalyst/Catalyst-Authentication-Credential-HTTP/pull/1
• https://metacpan.org/release/ETHER/Catalyst-Authentication-Credential-HTTP-1.018/source/lib/Catalyst/Authentication/Credential/HTTP.pm#L391
• https://security.metacpan.org/patches/C/Catalyst-Authentication-Credential-HTTP/1.018/CVE-2025-40920-r1.patch
• http://www.openwall.com/lists/oss-security/2025/08/12/1

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