{"id":"CVE-2026-102825","state":"PUBLISHED","title":"Russh: Configured server auth-attempt cap is not enforced in the USERAUTH_REQUEST runtime path","description":"Russh is a Rust SSH client and server library. Prior to 0.62.6, the USERAUTH_REQUEST path reached from server::run_stream in russh/src/server/encrypted.rs increments self.common.auth_attempts but never compares it with server::Config.max_auth_attempts. An unauthenticated remote client can continue submitting authentication requests on one connection beyond the configured cap, bypassing the deployment's attempt-limiting policy and increasing online guessing opportunity and backend authentication workload. This issue is fixed in version 0.62.6.","publishedAt":"2026-09-29T18:31:32.393Z","updatedAt":"2026-09-30T19:29:26.432Z","severity":{"score":3.7,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["Eugeny russh"],"affected":[{"vendor":"Eugeny","product":"russh","versions":[{"version":"< 0.62.6","status":"affected"}]}],"references":["https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35","https://github.com/Eugeny/russh/commit/f8fd0b11a393364dc7f01a182482d86adafdd653","https://github.com/Eugeny/russh/releases/tag/v0.62.6"],"weaknesses":["CWE-307"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/102xxx/CVE-2026-102825.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-102825","state":"PUBLISHED","datePublished":"2026-09-29T18:31:32.393Z","dateUpdated":"2026-09-30T19:29:26.432Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-09-29T17:25:25.265Z"},"containers":{"cna":{"title":"Russh: Configured server auth-attempt cap is not enforced in the USERAUTH_REQUEST runtime path","descriptions":[{"lang":"en","value":"Russh is a Rust SSH client and server library. Prior to 0.62.6, the USERAUTH_REQUEST path reached from server::run_stream in russh/src/server/encrypted.rs increments self.common.auth_attempts but never compares it with server::Config.max_auth_attempts. An unauthenticated remote client can continue submitting authentication requests on one connection beyond the configured cap, bypassing the deployment's attempt-limiting policy and increasing online guessing opportunity and backend authentication workload. This issue is fixed in version 0.62.6."}],"affected":[{"vendor":"Eugeny","product":"russh","versions":[{"version":"< 0.62.6","status":"affected"}]}],"references":[{"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35","name":"https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/Eugeny/russh/commit/f8fd0b11a393364dc7f01a182482d86adafdd653","name":"https://github.com/Eugeny/russh/commit/f8fd0b11a393364dc7f01a182482d86adafdd653","tags":["x_refsource_MISC"]},{"url":"https://github.com/Eugeny/russh/releases/tag/v0.62.6","name":"https://github.com/Eugeny/russh/releases/tag/v0.62.6","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.7,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-307","lang":"en","description":"CWE-307: Improper Restriction of Excessive Authentication Attempts","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-29T18:31:32.393Z"},"source":{"advisory":"GHSA-g6xm-f9xp-qq35","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-30T19:29:11.461462Z","id":"CVE-2026-102825","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-30T19:29:26.432Z"}}]}}}