Vulnerability in Russh SSH Client and Server Library by Eugeny
CVE-2026-102823

7.5HIGH

Key Information:

Vendor

Eugeny

Status
Russh
Vendor
CVE Published:
29 September 2026

What is CVE-2026-102823?

The Russh SSH client and server library prior to version 0.63.1 contains a flaw in the client_read_authenticated function. This flaw permits a rogue SSH server to relay lifecycle events for channel identifiers that are not verified, which can lead to application errors such as panics or erroneous command execution. This can ultimately disrupt normal operations and compromise exit code tracking. Users are recommended to upgrade to version 0.63.1 to mitigate these risks.

Affected Version(s)

russh < 0.63.1

References

https://github.com/Eugeny/russh/security/advisories/GHSA-...
x_refsource_CONFIRM
https://github.com/Eugeny/russh/commit/3430fd26ecafc0dc37...
x_refsource_MISC
https://github.com/Eugeny/russh/releases/tag/v0.63.1
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.