github.com
https://github.com/Eugeny/russh CVE-2026-68930
MEDIUM
Russh: Channel-scoped server callbacks can be reached without an open channel
Record summary
CVE-2026-68930 has a selected CVSS score of 6.5 (medium).
Description
Russh is a Rust SSH client & server library. Prior to 0.62.5, russh dispatches channel-scoped Handler callbacks for recipient channel IDs that were never opened or confirmed in russh/src/server/encrypted.rs, server_read_authenticated, and the exec_request callback. Version 0.62.5 fixes the issue.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationPoC
AutomatableNo
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Aug 3, 2026 · Source: CVE List
Affected products and versions
2| Product | Source | Version range | Status |
|---|---|---|---|
| CVE List | < 0.62.5 | affected | |
| GitHub Advisory | Before 0.62.5 · Fixed in 0.62.5 | affected |
References
4github.com
https://github.com/Eugeny/russh/commit/7c5659f8cf6f6f2f9989d12dba0ebf49dc50a171 github.com
https://github.com/Eugeny/russh/releases/tag/v0.62.5 github.comConfirmation
https://github.com/Eugeny/russh/security/advisories/GHSA-m65r-rprj-r5rg