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CVE-2025-40920

8.6 · HIGH

Catalyst::Authentication::Credential::HTTP versions 1.018 and earlier for Perl generate nonces using the Perl Data::UUID library.

Published Aug 11, 2025CWE-338EPSS 0.44%

Overview

CVE-2025-40920 is a high-severity vulnerability. It was published on August 11, 2025 and has a CVSS 3.1 base score of 8.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refdatatracker.ietf.org/doc/html/rfc7616#section-5.12Refdatatracker.ietf.org/doc/html/rfc9562#name-security-considerationsGitHubgithub.com/perl-catalyst/Catalyst-Authentication-Credential-HTTP/commit/ad2c03aad95406db4ce35dfb670664ebde004c18GitHubgithub.com/perl-catalyst/Catalyst-Authentication-Credential-HTTP/pull/1Refmetacpan.org/release/ETHER/Catalyst-Authentication-Credential-HTTP-1.018/source/lib/Catalyst/Authentication/Credential/HTTP.pm#L391Refsecurity.metacpan.org/patches/C/Catalyst-Authentication-Credential-HTTP/1.018/CVE-2025-40920-r1.patchRefwww.openwall.com/lists/oss-security/2025/08/12/1

How CyberStrike helps

Frequently asked questions

What is CVE-2025-40920?

CVE-2025-40920 is a high-severity vulnerability. It was published on August 11, 2025 and has a CVSS 3.1 base score of 8.6 (HIGH).

How severe is CVE-2025-40920?

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-40920?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-40920?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-40920 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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