CVE-2025-21617

Description

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.

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Weakness Type (CWE)

CWE-338 CWE-338

References

Other References

https://github.com/guzzle/oauth-subscriber/blob/0.8.0/src/Oauth1.php#L192 https://github.com/guzzle/oauth-subscriber/commit/92b619b03bd21396e51c62e6bce83467d2ce8f53 https://github.com/guzzle/oauth-subscriber/releases/tag/0.8.1 https://github.com/guzzle/oauth-subscriber/security/advisories/GHSA-237r-r8m4-4q88

Frequently Asked Questions

What is CVE-2025-21617? +

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.

How do I check if I'm vulnerable to CVE-2025-21617? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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