CVE-2026-68930: CWE-666: Operation on Resource in Wrong Phase of Lifetime in Eugeny russh
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.
AI Analysis
Technical Summary
The vulnerability in Eugeny russh (CVE-2026-68930) involves operations on resources in the wrong phase of their lifetime, specifically dispatching callbacks for SSH channel IDs that have not been properly opened or confirmed. This occurs in the russh/src/server/encrypted.rs file within the server_read_authenticated function and the exec_request callback. The flaw could lead to improper handling of SSH channels, potentially allowing an attacker with low privileges to cause an integrity impact. The issue is resolved in russh version 0.62.5.
Potential Impact
The vulnerability has a CVSS 3.1 base score of 6.5 (medium severity) with network attack vector, low attack complexity, low privileges required, no user interaction, unchanged scope, no confidentiality impact, high integrity impact, and no availability impact. This means an attacker with low privileges on the network could exploit the flaw to cause integrity violations within the russh server or client, potentially affecting the correctness of operations or state.
Mitigation Recommendations
A fix is available in russh version 0.62.5. Users and administrators should upgrade to version 0.62.5 or later to remediate this vulnerability. No additional mitigation guidance is provided or required beyond applying the official fix.
CVE-2026-68930: CWE-666: Operation on Resource in Wrong Phase of Lifetime in Eugeny russh
Description
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.
CVSS v3.1
Score 6.5medium
Affected software
Eugeny
russh
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Eugeny russh (CVE-2026-68930) involves operations on resources in the wrong phase of their lifetime, specifically dispatching callbacks for SSH channel IDs that have not been properly opened or confirmed. This occurs in the russh/src/server/encrypted.rs file within the server_read_authenticated function and the exec_request callback. The flaw could lead to improper handling of SSH channels, potentially allowing an attacker with low privileges to cause an integrity impact. The issue is resolved in russh version 0.62.5.
Potential Impact
The vulnerability has a CVSS 3.1 base score of 6.5 (medium severity) with network attack vector, low attack complexity, low privileges required, no user interaction, unchanged scope, no confidentiality impact, high integrity impact, and no availability impact. This means an attacker with low privileges on the network could exploit the flaw to cause integrity violations within the russh server or client, potentially affecting the correctness of operations or state.
Mitigation Recommendations
A fix is available in russh version 0.62.5. Users and administrators should upgrade to version 0.62.5 or later to remediate this vulnerability. No additional mitigation guidance is provided or required beyond applying the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-31T21:49:24.927Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a70bf62bf32cb7a34daf177
Added to database: 08/03/2026, 16:18:42 UTC
Last enriched: 08/03/2026, 16:35:54 UTC
Last updated: 09/17/2026, 22:01:37 UTC
Views: 57
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