CVE-2026-68930
Russh: Channel-scoped server callbacks can be reached without an open channel
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-666 CWE-696 CWE-863 |
| Vendor | eugeny |
| Product | russh |
| Published | Aug 3, 2026 |
| Last Updated | Aug 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Affected Versions
Eugeny / russh
< 0.62.5