{"cve":"CVE-2025-40920","nvd":{"published":"2025-08-11T21:15:28.087","modified":"2026-06-17T09:22:17.803","status":"Deferred","description":"Catalyst::Authentication::Credential::HTTP versions 1.018 and earlier for Perl generate nonces using the Perl Data::UUID library.\n  *  Data::UUID does not use a strong cryptographic source for generating UUIDs.\n  *  Data::UUID returns v3 UUIDs, which are generated from known information and are unsuitable for security, as per RFC 9562.\n  *  The nonces should be generated from a strong cryptographic source, as per RFC 7616.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","score":8.6},"cwes":["CWE-338","CWE-340"],"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"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:06:45.861874017+00:00"},"epss":{"cve":"CVE-2025-40920","score":0.00444,"percentile":0.38644,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}