What is CVE-2025-40920?

CVE-2025-40920 is a high-severity vulnerability in Ether Catalyst::authentication::credential::http, classified under Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). CVSS score: 8.6/10. Published 2025-08-11.

How severe is CVE-2025-40920?

High severity. CVSS v3 base score is 8.6 out of 10.

Vulnerability in Ether Catalyst::authentication::credential::http

CVE-2025-40920

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.

EPSS: 0.004 (33.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L.

Affected products

Ether Catalyst::authentication::credential::http — versions 0.06

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-40920?: CVE-2025-40920 is a high-severity vulnerability in Ether Catalyst::authentication::credential::http, classified under Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). CVSS score: 8.6/10. Published 2025-08-11.
How severe is CVE-2025-40920?: High severity. CVSS v3 base score is 8.6 out of 10.