CVE-2026-68930
MEDIUMRussh: Channel-scoped server callbacks can be reached without an open channel
Title source: cnaDescription
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.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/Eugeny/russh/security/advisories/GHSA-m65r-rprj-r5rg
X_Refsource_Misc x_refsource_misc
https://github.com/Eugeny/russh/commit/7c5659f8cf6f6f2f9989d12dba0ebf49dc50a171
X_Refsource_Misc x_refsource_misc
https://github.com/Eugeny/russh/releases/tag/v0.62.5
Scores
CVSS v3
6.5
EPSS
0.0021
EPSS Percentile
11.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-666
CWE-696
CWE-863
Status
published
Products (2)
crates.io/russh
0 - 0.62.5crates.io
Eugeny/russh
< 0.62.5
Published
Aug 03, 2026
Tracked Since
Aug 03, 2026