CVE-2025-40920

Catalyst::Authentication::Credential::HTTP versions 1.018 and earlier for Perl use insecurely generated nonces

8.6 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: Low
Availability: Low

Exploit likelihood

0.47%Up 0.4 points since Aug 12, 2025

What each source reports

CVE List Score used 8.6

Catalyst::Authentication::Credential::HTTP versions 1.018 and earlier for Perl use insecurely generated nonces

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.

Record: CVE-2025-40920
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Weakness: CWE-340, CWE-338
Updated: 2026-11-02

EUVDEUVD-2025-24168 8.6

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.

Record: EUVD-2025-24168
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Updated: 2026-11-02

GitHub AdvisoriesGHSA-5xmm-95mj-42h8 8.6

Catalyst::Authentication::Credential::HTTP versions 1.018 and earlier for Perl generate nonces...

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.

Record: GHSA-5xmm-95mj-42h8
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Weakness: CWE-338
Updated: 2026-11-02

NVD 8.6

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.

Record: CVE-2025-40920
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Weakness: CWE-338, CWE-340
Updated: 2026-11-02

OSV 8.6

Catalyst::Authentication::Credential::HTTP versions 1.018 and earlier for Perl use insecurely generated nonces

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.

Record: CVE-2025-40920
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Weakness: CWE-338, CWE-340
Updated: 2026-11-02

OSVDEBIAN-CVE-2025-40920 8.6

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.

Record: DEBIAN-CVE-2025-40920
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Updated: 2026-11-02

OSVUBUNTU-CVE-2025-40920 8.6

Record: UBUNTU-CVE-2025-40920
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Updated: 2026-11-02

Affected products

ether catalyst::authentication::credential::http

Affected packages

Affected packages
Package	Affected	Fixed
`libcatalyst-authentication-credential-http-perl` Debian:12	All versions, plus listed versions 1.018-21.018-31.018-41.019-1	None known
`libcatalyst-authentication-credential-http-perl` Debian:13	All versions, plus listed versions 1.018-31.018-41.019-1	None known
`libcatalyst-authentication-credential-http-perl` Debian:14	before 1.018-4, plus listed versions 1.018-3	1.018-4
`libcatalyst-authentication-credential-http-perl` Ubuntu:16.04:LTS	All versions, plus listed versions 1.016-2	None known
`libcatalyst-authentication-credential-http-perl` Ubuntu:18.04:LTS	All versions, plus listed versions 1.016-31.018-1	None known
`libcatalyst-authentication-credential-http-perl` Ubuntu:20.04:LTS	All versions, plus listed versions 1.018-1	None known
`libcatalyst-authentication-credential-http-perl` Ubuntu:22.04:LTS	All versions, plus listed versions 1.018-1	None known
`libcatalyst-authentication-credential-http-perl` Ubuntu:24.04:LTS	All versions, plus listed versions 1.018-21.018-3	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-40920 is a high vulnerability (CVSS 8.6) in Ether Catalyst::authentication::credential::http, published August 11, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.47%, the 40th percentile. Fixed in libcatalyst-authentication-credential-http-perl 1.018-4.

References

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