Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS0yMzdyLXI4bTQtNHE4OM4ABC_D

Guzzle OAuth Subscriber has insufficient nonce entropy

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.

Permalink: https://github.com/advisories/GHSA-237r-r8m4-4q88
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS0yMzdyLXI4bTQtNHE4OM4ABC_D
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 2 days ago
Updated: 2 days ago

EPSS Percentage: 0.00045
EPSS Percentile: 0.17541

Identifiers: GHSA-237r-r8m4-4q88, CVE-2025-21617
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/advisories/GHSA-237r-r8m4-4q88

Repository: https://github.com/guzzle/oauth-subscriber
Blast Radius: 0.0

Affected Packages