{"id":"EUVD-2026-89206","revision":"6eb6faa2bc794a48b25a25a6b3e40fb2","records":[{"revision":"6eb6faa2bc794a48b25a25a6b3e40fb2","observedAt":"2026-11-03T02:57:48.345+00:00","statement":{"source":"euvd","id":"EUVD-2026-89206","aliases":["CVE-2026-102823","GHSA-47hw-gvq5-r2gm"],"title":"Russh is a Rust SSH client and server library. Prior to 0.63.1, client_read_authenticated in russh/src/client/encrypted.rs forwards CHANNEL_DATA, CHANNEL_EXTENDED_DATA, CHANNEL_EOF, CHANNEL_CLOSE, CHANNEL_OPEN_FAILURE, CHANNEL_SUCCESS, CHAN…","description":"Russh is a Rust SSH client and server library. Prior to 0.63.1, client_read_authenticated in russh/src/client/encrypted.rs forwards CHANNEL_DATA, CHANNEL_EXTENDED_DATA, CHANNEL_EOF, CHANNEL_CLOSE, CHANNEL_OPEN_FAILURE, CHANNEL_SUCCESS, CHANNEL_FAILURE, and CHANNEL_REQUEST subtypes exit-status, exit-signal, and xon-xoff to public client::Handler callbacks without confirming that the ChannelId belongs to a channel the client opened and established. A malicious SSH server can send lifecycle events for predicted, unopened, unconfirmed, or released channel identifiers, causing application panics or corrupting command completion and exit-code tracking. This issue is fixed in version 0.63.1.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5,"severity":null}],"references":["https://github.com/Eugeny/russh/security/advisories/GHSA-47hw-gvq5-r2gm","https://github.com/Eugeny/russh/commit/3430fd26ecafc0dc3705210f5f39a9119fa22774","https://github.com/Eugeny/russh/releases/tag/v0.63.1"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-89206","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 29, 2026, 6:25:58 PM","dateUpdated":"Oct 2, 2026, 12:20:10 PM"},"relatedAdvisories":[{"id":"RHSA-2026:74586","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update","vulnerabilityIds":["CVE-2026-102821","CVE-2026-102823","CVE-2026-102824","CVE-2026-102825"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-89206","identifiers":["EUVD-2026-89206","CVE-2026-102823","GHSA-47hw-gvq5-r2gm"]},"retained":false,"historicalAffected":[]}],"coverage":[]}