{"id":"CVE-2026-102822","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-102822","generatedAt":"2026-10-28T04:17:59.162Z","title":"A remote peer can then send a packet with a decrypted length of zero, causing russh/src/cipher/mod.rs to shrink the previously read block before indexing buffer.buffer[16..], which panics and terminates the connection task.","description":"Russh is a Rust SSH client and server library. Prior to 0.63.1, a connection configured to permit mac=none can negotiate it with a MAC-requiring CTR or CBC block cipher because the selection logic validates needs_mac() only when MAC selection fails. A remote peer can then send a packet with a decrypted length of zero, causing russh/src/cipher/mod.rs to shrink the previously read block before indexing buffer.buffer[16..], which panics and terminates the connection task. This issue is fixed in version 0.63.1.","published":"2026-09-29T19:17:24.000Z","lastModified":"2026-09-29T20:17:18.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":3.7,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"},"cwe":["CWE-129"],"affected":[],"epss":{"score":0.00327,"percentile":0.25589,"date":"2026-10-27","history":[{"date":"2026-09-30","score":0.00327,"percentile":0.23339}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.33%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-29T19:17:24.000Z","detail":{"score":"3.7","severity":"LOW","publishedAt":"2026-09-29T19:17:24.190Z"},"summary":"New CVE, low severity (CVSS 3.7)."}],"references":[{"url":"https://github.com/Eugeny/russh/commit/2885385abfee279092a41d80c6cb6ac367353159","source":"security-advisories@github.com"},{"url":"https://github.com/Eugeny/russh/releases/tag/v0.63.1","source":"security-advisories@github.com"},{"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-p8qx-h547-fjw9","source":"security-advisories@github.com"},{"url":"https://github.com/Eugeny/russh/security/advisories/GHSA-p8qx-h547-fjw9","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-102822","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}