CVE-2026-68930CWE-666CWE-696CWE-863broken-access-control

CVE-2026-68930

Medium · published August 3, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
11.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00213 · 11.6th percentile
Weaknesses
CWE-666 · Operation on Resource in Wrong Phase of Lifetime; CWE-696 · Incorrect Behavior Order; CWE-863 · Incorrect Authorization
Published
2026-08-03T21:16Z
References (4)
https://github.com/Eugeny/russh/commit/7c5659f8cf6f6f2f9989d12dba0ebf49dc50a171 · [email protected]https://github.com/Eugeny/russh/releases/tag/v0.62.5 · [email protected]https://github.com/Eugeny/russh/security/advisories/GHSA-m65r-rprj-r5rg · [email protected]https://github.com/Eugeny/russh/security/advisories/GHSA-m65r-rprj-r5rg · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 03 AUG 15:34Z
    Russh: Channel-scoped server callbacks can be reached without an open channel
    cvelistv5