CVE-2025-21617
MEDIUMGuzzle OAuth Subscriber < 0.8.1 - Use of Cryptographically Weak PRNG in Nonce Generation
Title source: llmDescription
Guzzle OAuth Subscriber signs Guzzle requests using OAuth 1.0. Prior to 0.8.1, Nonce generation does not use sufficient entropy nor a cryptographically secure pseudorandom source. This can leave servers vulnerable to replay attacks when TLS is not used. This vulnerability is fixed in 0.8.1.
References (4)
Core 4
Core References
Vendor Advisory x_refsource_confirm
https://github.com/guzzle/oauth-subscriber/security/advisories/GHSA-237r-r8m4-4q88
Patch x_refsource_misc
https://github.com/guzzle/oauth-subscriber/commit/92b619b03bd21396e51c62e6bce83467d2ce8f53
Various Sources x_refsource_misc
https://github.com/guzzle/oauth-subscriber/blob/0.8.0/src/Oauth1.php#L192
Release Notes x_refsource_misc
https://github.com/guzzle/oauth-subscriber/releases/tag/0.8.1
Scores
CVSS v4
6.3
EPSS
0.0044
EPSS Percentile
35.0%
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-338
Status
published
Products (2)
guzzle/oauth-subscriber
< 0.8.1
guzzlehttp/oauth-subscriber
0 - 0.8.1Packagist
Published
Jan 06, 2025
Tracked Since
Feb 18, 2026