PT-2026-56625 · Cline · Cline

Published 2026-07-08 · Updated 2026-07-08 · CVE-2026-59723

NVD

CVSS v3.1

8.8

High

Base vector

AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

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.

Fix

Origin Validation Error

Weakness Enumeration

CWE-346

Related Identifiers

CVE-2026-59723

Affected Products

Cline

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-59723 · Security Note
• https://github.com/cline/cline/commit/d09270940f5746f288cfc4a5039b46a2f4d5d01e · Note
• https://github.com/cline/cline/pull/11724 · Note
• https://github.com/cline/cline/releases/tag/cli-v3.0.30 · Note
• https://github.com/cline/cline/security/advisories/GHSA-3cj3-hqcr-g934 · Note