CVE-2026-73489

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{"affected": [{"affectedData": [{"product": "russh", "vendor": "Eugeny", "versions": [{"status": "affected", "version": "< 0.62.4"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}, {"lang": "es", "value": "Russh es una biblioteca de cliente y servidor SSH de Rust. Antes de la versi\u00f3n 0.62.4, un cliente SSH autenticado puede causar una denegaci\u00f3n de servicio al enviar una solicitud de canal pty-req con m\u00e1s de 130 registros de modo de terminal. El analizador en russh/src/server/encrypted.rs almacena los modos de terminal en un array fijo de 130 entradas [(Pty::TTY_OP_END, 0); 130] pero contin\u00faa aumentando el recuento de modos, luego construye un slice fuera de l\u00edmites y entra en p\u00e1nico antes de que se ejecute el gestor de solicitud pty_request de la aplicaci\u00f3n. El p\u00e1nico termina la tarea de sesi\u00f3n del servidor sin causar corrupci\u00f3n de memoria. Este problema est\u00e1 solucionado en la versi\u00f3n 0.62.4."}], "id": "CVE-2026-73489", "lastModified": "2026-10-24T15:10:00.190", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-73489", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-17T19:50:25.618015Z", "version": "2.0.3"}}]}, "published": "2026-08-13T22:17:26.893", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/commit/8912512371820167a12a0a638bd666856ce458ad"}, {"source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/releases/tag/v0.62.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/Eugeny/russh/security/advisories/GHSA-cqjc-rmpq-xprq"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/Eugeny/russh/security/advisories/GHSA-cqjc-rmpq-xprq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-129"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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