{"id":"CVE-2026-68930","state":"PUBLISHED","title":"Russh: Channel-scoped server callbacks can be reached without an open channel","description":"Russh is a Rust SSH client & server library. Prior to 0.62.5, russh dispatches channel-scoped Handler callbacks for recipient channel IDs that were never opened or confirmed in russh/src/server/encrypted.rs, server_read_authenticated, and the exec_request callback. Version 0.62.5 fixes the issue.","publishedAt":"2026-08-03T15:34:41.216Z","updatedAt":"2026-08-03T16:46:32.324Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["Eugeny russh"],"affected":[{"vendor":"Eugeny","product":"russh","versions":[{"version":"< 0.62.5","status":"affected"}]}],"references":["https://github.com/Eugeny/russh/security/advisories/GHSA-m65r-rprj-r5rg","https://github.com/Eugeny/russh/commit/7c5659f8cf6f6f2f9989d12dba0ebf49dc50a171","https://github.com/Eugeny/russh/releases/tag/v0.62.5"],"weaknesses":["CWE-666","CWE-696","CWE-863"],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/68xxx/CVE-2026-68930.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68930","state":"PUBLISHED","datePublished":"2026-08-03T15:34:41.216Z","dateUpdated":"2026-08-03T16:46:32.324Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-31T21:49:24.927Z"},"containers":{"cna":{"title":"Russh: Channel-scoped server callbacks can be reached without an open channel","descriptions":[{"lang":"en","value":"Russh is a Rust SSH client & server library. Prior to 0.62.5, russh dispatches channel-scoped Handler callbacks for recipient channel IDs that were never opened or confirmed in russh/src/server/encrypted.rs, server_read_authenticated, and the exec_request callback. Version 0.62.5 fixes the issue."}],"affected":[{"vendor":"Eugeny","product":"russh","versions":[{"version":"< 0.62.5","status":"affected"}]}],"references":[{"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-m65r-rprj-r5rg","name":"https://github.com/Eugeny/russh/security/advisories/GHSA-m65r-rprj-r5rg","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/Eugeny/russh/commit/7c5659f8cf6f6f2f9989d12dba0ebf49dc50a171","name":"https://github.com/Eugeny/russh/commit/7c5659f8cf6f6f2f9989d12dba0ebf49dc50a171","tags":["x_refsource_MISC"]},{"url":"https://github.com/Eugeny/russh/releases/tag/v0.62.5","name":"https://github.com/Eugeny/russh/releases/tag/v0.62.5","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-666","lang":"en","description":"CWE-666: Operation on Resource in Wrong Phase of Lifetime","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-696","lang":"en","description":"CWE-696: Incorrect Behavior Order","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-03T15:34:41.216Z"},"source":{"advisory":"GHSA-m65r-rprj-r5rg","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-m65r-rprj-r5rg","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-03T16:43:29.958225Z","id":"CVE-2026-68930","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":"2026-08-03T16:46:32.324Z"}}]}}}