CVE-2026-59723
Published:July 08, 2026
Updated:August 04, 2026
Cline is an autonomous coding agent as an SDK, IDE extension, or CLI assistant. Prior to 3.0.30, the Cline Hub dashboard server launched by the cline dashboard command accepts WebSocket connections on the /browser endpoint without validating the Origin header, and when ROOM_SECRET is unset for local 127.0.0.1 binds, isAuthorizedBrowserRequest() allows attacker-controlled websites to send desktopCommand frames that read workspace state, mutate MCP and provider settings, and trigger command execution when a provider or model is configured. This issue is fixed in version 3.0.30.
Affected Packages
https://github.com/cline/cline.git (GITHUB):
Affected version(s) >=cli-v3.0.0 <cli-v3.0.30Fix Suggestion:
Update to version cli-v3.0.30cline (NPM):
Affected version(s) >=0.1.0 <3.0.30Fix Suggestion:
Update to version 3.0.30Related Resources (6)
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Contact UsCVSS v4
Base Score:
9.4
Attack Vector
ADJACENT
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
8.8
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Origin Validation Error
EPSS
Base Score:
0.14