guzzle/oauth-subscriber · Security
Guzzle OAuth Subscriber has insufficient nonce entropy
- GHSA ID
- GHSA-237r-r8m4-4q88
- CVE ID
- CVE-2025-21617
- Severity
- medium
- Published
- Updated
- CVSS v4
- 6.3 · 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
Description
Impact
Nonce generation does not use sufficient entropy nor a cryptographically secure pseudorandom source (https://github.com/guzzle/oauth-subscriber/blob/0.8.0/src/Oauth1.php#L192). This can leave servers vulnerable to replay attacks when TLS is not used.
Patches
Upgrade to version 0.8.1 or higher.
Workarounds
No.
References
Issue is similar to https://nvd.nist.gov/vuln/detail/CVE-2025-22376.
CWEs
- CWE-338 · Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
References
- https://github.com/guzzle/oauth-subscriber/security/advisories/GHSA-237r-r8m4-4q88 ↗
- https://github.com/guzzle/oauth-subscriber/commit/92b619b03bd21396e51c62e6bce83467d2ce8f53 ↗
- https://github.com/guzzle/oauth-subscriber/blob/0.8.0/src/Oauth1.php#L192 ↗
- https://github.com/guzzle/oauth-subscriber/releases/tag/0.8.1 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2025-21617 ↗
- https://github.com/FriendsOfPHP/security-advisories/blob/master/guzzlehttp/oauth-subscriber/CVE-2025-21617.yaml ↗
- https://github.com/advisories/GHSA-237r-r8m4-4q88 ↗