{"id":"CVE-2026-73489","summary":"Russh: Post-auth remote panic via pty-req with more than 130 terminal-mode records","details":"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.","aliases":["GHSA-cqjc-rmpq-xprq"],"modified":"2026-08-18T12:57:48.714645615Z","published":"2026-08-13T22:04:44.470Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73489.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-129"]},"references":[{"type":"WEB","url":"https://github.com/Eugeny/russh/releases/tag/v0.62.4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73489.json"},{"type":"ADVISORY","url":"https://github.com/Eugeny/russh/security/advisories/GHSA-cqjc-rmpq-xprq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73489"},{"type":"FIX","url":"https://github.com/Eugeny/russh/commit/8912512371820167a12a0a638bd666856ce458ad"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/eugeny/russh","events":[{"introduced":"0"},{"fixed":"8912512371820167a12a0a638bd666856ce458ad"},{"fixed":"0089c89c94753bebbec12b956c07a1cd38740379"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.62.4"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v0.62.3","v0.62.2","v0.62.1","v0.62.0","v0.61.2","v0.61.1","v0.61.0","v0.60.3","v0.60.2","v0.60.1","v0.60.0","v0.59.0","v0.58.0","v0.57.1","v0.57.0","v0.56.0","v0.55.0","v0.54.6","v0.54.5","v0.54.4","v0.54.3","v0.54.2","v0.54.1","v0.54.0","v0.53.0","v0.53.0-beta.1","v0.52.1","v0.52.0","v0.52.0-beta.1","v0.51.1","v0.51.0","v0.51.0-beta.3","v0.51.0-beta.2","v0.51.0-beta.1","v0.50.4","v0.50.3","v0.50.1","v0.50.0","v0.50.0-beta.12","v0.50.0-beta.11","v0.50.0-beta.10","v0.50.0-beta.9","v0.50.0-beta.8","v0.50.0-beta.7","v0.50.0-beta.6","v0.50.0-beta.5","v0.50.0-beta.4","v0.50.0-beta.3","v0.50.0-beta.2","v0.49.0","v0.48.2","v0.48.1","v0.48.0","v0.47.0-beta.4","v0.47.0-beta.3","v0.46.0","v0.45.0","v0.44.0","v0.44.0-beta.4","v0.44.0-beta.3","v0.44.0-beta.1","v0.43.0","v0.43.0-beta.1","v0.42.0","v0.40.2","v0.40.1","v0.40.0","v0.38.0","v0.39.0-beta.1","v0.38.0-beta.1","v0.37.1","v0.37.0","v0.36.1","v0.37.0-beta.1","0.37.0-beta.1","v0.35.0-beta.9","v0.35.0-beta.8","v0.35.0-beta.7","v0.35.0-beta.6","v0.35.0-beta.5","v0.35.0-beta.3","v0.35.0-beta.2","v0.35.0-beta.1","v0.34.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73489.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"}]}