{"id":"CVE-2025-21617","state":"PUBLISHED","title":"Guzzle OAuth Subscriber has insufficient nonce entropy","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.","publishedAt":"2025-01-06T19:23:23.232Z","updatedAt":"2025-01-06T19:42:17.597Z","severity":{"score":6.3,"label":"Medium","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["guzzle oauth-subscriber"],"affected":[{"vendor":"guzzle","product":"oauth-subscriber","versions":[{"version":"< 0.8.1","status":"affected"}]}],"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"],"weaknesses":["CWE-338"],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/21xxx/CVE-2025-21617.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-21617","state":"PUBLISHED","datePublished":"2025-01-06T19:23:23.232Z","dateUpdated":"2025-01-06T19:42:17.597Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2024-12-29T03:00:24.713Z"},"containers":{"cna":{"title":"Guzzle OAuth Subscriber has insufficient nonce entropy","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"guzzle","product":"oauth-subscriber","versions":[{"version":"< 0.8.1","status":"affected"}]}],"references":[{"url":"https://github.com/guzzle/oauth-subscriber/security/advisories/GHSA-237r-r8m4-4q88","name":"https://github.com/guzzle/oauth-subscriber/security/advisories/GHSA-237r-r8m4-4q88","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/guzzle/oauth-subscriber/commit/92b619b03bd21396e51c62e6bce83467d2ce8f53","name":"https://github.com/guzzle/oauth-subscriber/commit/92b619b03bd21396e51c62e6bce83467d2ce8f53","tags":["x_refsource_MISC"]},{"url":"https://github.com/guzzle/oauth-subscriber/blob/0.8.0/src/Oauth1.php#L192","name":"https://github.com/guzzle/oauth-subscriber/blob/0.8.0/src/Oauth1.php#L192","tags":["x_refsource_MISC"]},{"url":"https://github.com/guzzle/oauth-subscriber/releases/tag/0.8.1","name":"https://github.com/guzzle/oauth-subscriber/releases/tag/0.8.1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-338","lang":"en","description":"CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-01-06T19:23:23.232Z"},"source":{"advisory":"GHSA-237r-r8m4-4q88","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-01-06T19:42:11.083971Z","id":"CVE-2025-21617","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-01-06T19:42:17.597Z"}}]}}}