{"api_version":"1","generated_at":"2026-08-14T07:00:16+00:00","cve":"CVE-2026-73489","urls":{"html":"https://cve.report/CVE-2026-73489","api":"https://cve.report/api/cve/CVE-2026-73489.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-73489","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-73489"},"summary":{"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.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-08-13 22:17:26","updated_at":"2026-08-13 22:17:26"},"problem_types":["CWE-129","CWE-129 CWE-129: Improper Validation of Array Index"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"4.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"4.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","data":{"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"}}],"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","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/Eugeny/russh/commit/8912512371820167a12a0a638bd666856ce458ad","name":"https://github.com/Eugeny/russh/commit/8912512371820167a12a0a638bd666856ce458ad","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/Eugeny/russh/releases/tag/v0.62.4","name":"https://github.com/Eugeny/russh/releases/tag/v0.62.4","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-73489","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73489","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Eugeny","product":"russh","version":"affected < 0.62.4","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"russh","vendor":"Eugeny","versions":[{"status":"affected","version":"< 0.62.4"}]}],"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."}],"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","description":"CWE-129: Improper Validation of Array Index","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-13T22:04:44.470Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/Eugeny/russh/security/advisories/GHSA-cqjc-rmpq-xprq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-cqjc-rmpq-xprq"},{"name":"https://github.com/Eugeny/russh/commit/8912512371820167a12a0a638bd666856ce458ad","tags":["x_refsource_MISC"],"url":"https://github.com/Eugeny/russh/commit/8912512371820167a12a0a638bd666856ce458ad"},{"name":"https://github.com/Eugeny/russh/releases/tag/v0.62.4","tags":["x_refsource_MISC"],"url":"https://github.com/Eugeny/russh/releases/tag/v0.62.4"}],"source":{"advisory":"GHSA-cqjc-rmpq-xprq","discovery":"UNKNOWN"},"title":"Russh: Post-auth remote panic via pty-req with more than 130 terminal-mode records"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-73489","datePublished":"2026-08-13T22:04:44.470Z","dateReserved":"2026-08-12T19:00:33.735Z","dateUpdated":"2026-08-13T22:04:44.470Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-13 22:17:26","lastModifiedDate":"2026-08-13 22:17:26","problem_types":["CWE-129","CWE-129 CWE-129: Improper Validation of Array Index"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":2.8,"impactScore":1.4}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"73489","Ordinal":"1","Title":"Russh: Post-auth remote panic via pty-req with more than 130 ter","CVE":"CVE-2026-73489","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"73489","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Russh: Post-auth remote panic via pty-req with more than 130 ter"}]}}}