CVE-2026-68930

Russh: Channel-scoped server callbacks can be reached without an open channel

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.

Affected

Eugeny · russh

CVSS v3.1 GITHUB

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS

0.38% chance of exploitation in the next 30 days, 30th percentile

Published

2026-08-03

Proof-of-concept exploits (1)

• advisories/GHSA-m65r-rprj-r5rg

References

• CVE Record
• NVD entry