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.

zetlyn/cve-nvd vulnerability cve CVE-2026-102825 known 2026-09-29

https://nvd.nist.gov/vuln/detail/CVE-2026-102825

Properties

cvss	3.7 receipt Source NVD Its words `3.7` Read by `field:cve.metrics.cvssMetricV31[].cvssData.baseScore` Said since 2026-10-02 12:00 UTC Last answered 2026-10-05 18:25 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "product": "russh", "vendor": "Eugeny", "versions": [ { "status": "affected", "version": "< 0.62.6" } ] } ], "source": "security-advisories@github.com" } ], "cveTags": [], "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." } ], "id": "CVE-2026-102825", "lastModified": "2026-09-30T20:17:24.100", "metrics": { "cvssMetricV31": [ { "cvssData": { "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" }, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary" } ], "ssvcV203": [ { "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": { "id": "CVE-2026-102825", "options": [ { "exploitation": "poc" }, { "automatable": "no" }, { "technicalImpact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2026-09-30T19:29:11.461462Z", "version": "2.0.3" } } ] }, "published": "2026-09-29T19:17:24.713", "references": [ { "source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/commit/f8fd0b11a393364dc7f01a182482d86adafdd653" }, { "source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/releases/tag/v0.62.6" }, { "source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35" }, { "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35" } ], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-307" } ], "source": "security-advisories@github.com", "type": "Secondary" } ] } }
product	russh receipt Source NVD Its words `russh` Read by `field:cve.affected[].affectedData[].product` Said since 2026-10-02 12:00 UTC Last answered 2026-10-05 18:25 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "product": "russh", "vendor": "Eugeny", "versions": [ { "status": "affected", "version": "< 0.62.6" } ] } ], "source": "security-advisories@github.com" } ], "cveTags": [], "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." } ], "id": "CVE-2026-102825", "lastModified": "2026-09-30T20:17:24.100", "metrics": { "cvssMetricV31": [ { "cvssData": { "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" }, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary" } ], "ssvcV203": [ { "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": { "id": "CVE-2026-102825", "options": [ { "exploitation": "poc" }, { "automatable": "no" }, { "technicalImpact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2026-09-30T19:29:11.461462Z", "version": "2.0.3" } } ] }, "published": "2026-09-29T19:17:24.713", "references": [ { "source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/commit/f8fd0b11a393364dc7f01a182482d86adafdd653" }, { "source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/releases/tag/v0.62.6" }, { "source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35" }, { "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35" } ], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-307" } ], "source": "security-advisories@github.com", "type": "Secondary" } ] } }
status	Deferred receipt Source NVD Its words `Deferred` Read by `field:cve.vulnStatus` Said since 2026-10-02 12:00 UTC Last answered 2026-10-05 18:25 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "product": "russh", "vendor": "Eugeny", "versions": [ { "status": "affected", "version": "< 0.62.6" } ] } ], "source": "security-advisories@github.com" } ], "cveTags": [], "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." } ], "id": "CVE-2026-102825", "lastModified": "2026-09-30T20:17:24.100", "metrics": { "cvssMetricV31": [ { "cvssData": { "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" }, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary" } ], "ssvcV203": [ { "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": { "id": "CVE-2026-102825", "options": [ { "exploitation": "poc" }, { "automatable": "no" }, { "technicalImpact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2026-09-30T19:29:11.461462Z", "version": "2.0.3" } } ] }, "published": "2026-09-29T19:17:24.713", "references": [ { "source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/commit/f8fd0b11a393364dc7f01a182482d86adafdd653" }, { "source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/releases/tag/v0.62.6" }, { "source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35" }, { "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35" } ], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-307" } ], "source": "security-advisories@github.com", "type": "Secondary" } ] } }
vendor	Eugeny receipt Source NVD Its words `Eugeny` Read by `field:cve.affected[].affectedData[].vendor` Said since 2026-10-02 12:00 UTC Last answered 2026-10-05 18:25 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "product": "russh", "vendor": "Eugeny", "versions": [ { "status": "affected", "version": "< 0.62.6" } ] } ], "source": "security-advisories@github.com" } ], "cveTags": [], "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." } ], "id": "CVE-2026-102825", "lastModified": "2026-09-30T20:17:24.100", "metrics": { "cvssMetricV31": [ { "cvssData": { "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" }, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary" } ], "ssvcV203": [ { "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": { "id": "CVE-2026-102825", "options": [ { "exploitation": "poc" }, { "automatable": "no" }, { "technicalImpact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2026-09-30T19:29:11.461462Z", "version": "2.0.3" } } ] }, "published": "2026-09-29T19:17:24.713", "references": [ { "source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/commit/f8fd0b11a393364dc7f01a182482d86adafdd653" }, { "source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/releases/tag/v0.62.6" }, { "source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35" }, { "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/Eugeny/russh/security/advisories/GHSA-g6xm-f9xp-qq35" } ], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-307" } ], "source": "security-advisories@github.com", "type": "Secondary" } ] } }

Text

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.