{"id":"CVE-2026-73489","state":"PUBLISHED","title":"Russh: Post-auth remote panic via pty-req with more than 130 terminal-mode records","description":"Russh is a Rust SSH client & server library. Prior to 0.62.4, an authenticated SSH client can cause a denial of service by sending a pty-req channel request with more than 130 terminal-mode records. The parser in russh/src/server/encrypted.rs stores terminal modes in a fixed 130-entry [(Pty::TTY_OP_END, 0); 130] array but continues increasing the mode count, then constructs an out-of-bounds slice and panics before the application pty_request handler runs. The panic terminates the server session task without causing memory corruption. This issue is fixed in version 0.62.4.","publishedAt":"2026-08-13T22:04:44.470Z","updatedAt":"2026-08-17T19:50:33.126Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["Eugeny russh"],"affected":[{"vendor":"Eugeny","product":"russh","versions":[{"version":"< 0.62.4","status":"affected"}]}],"references":["https://github.com/Eugeny/russh/security/advisories/GHSA-cqjc-rmpq-xprq","https://github.com/Eugeny/russh/commit/8912512371820167a12a0a638bd666856ce458ad","https://github.com/Eugeny/russh/releases/tag/v0.62.4"],"weaknesses":["CWE-129"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73489.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73489","state":"PUBLISHED","datePublished":"2026-08-13T22:04:44.470Z","dateUpdated":"2026-08-17T19:50:33.126Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-12T19:00:33.735Z"},"containers":{"cna":{"title":"Russh: Post-auth remote panic via pty-req with more than 130 terminal-mode records","descriptions":[{"lang":"en","value":"Russh is a Rust SSH client & server library. Prior to 0.62.4, an authenticated SSH client can cause a denial of service by sending a pty-req channel request with more than 130 terminal-mode records. The parser in russh/src/server/encrypted.rs stores terminal modes in a fixed 130-entry [(Pty::TTY_OP_END, 0); 130] array but continues increasing the mode count, then constructs an out-of-bounds slice and panics before the application pty_request handler runs. The panic terminates the server session task without causing memory corruption. This issue is fixed in version 0.62.4."}],"affected":[{"vendor":"Eugeny","product":"russh","versions":[{"version":"< 0.62.4","status":"affected"}]}],"references":[{"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-cqjc-rmpq-xprq","name":"https://github.com/Eugeny/russh/security/advisories/GHSA-cqjc-rmpq-xprq","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/Eugeny/russh/commit/8912512371820167a12a0a638bd666856ce458ad","name":"https://github.com/Eugeny/russh/commit/8912512371820167a12a0a638bd666856ce458ad","tags":["x_refsource_MISC"]},{"url":"https://github.com/Eugeny/russh/releases/tag/v0.62.4","name":"https://github.com/Eugeny/russh/releases/tag/v0.62.4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-129","lang":"en","description":"CWE-129: Improper Validation of Array Index","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-13T22:04:44.470Z"},"source":{"advisory":"GHSA-cqjc-rmpq-xprq","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-cqjc-rmpq-xprq","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-17T19:50:25.618015Z","id":"CVE-2026-73489","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":"2026-08-17T19:50:33.126Z"}}]}}}