High severity8.8NVD Advisory· Published Jul 8, 2026· Updated Aug 26, 2026
CVE-2026-59723
CVE-2026-59723
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
clinenpm | < 3.0.30 | 3.0.30 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/cline/cline/commit/d09270940f5746f288cfc4a5039b46a2f4d5d01envdPatchWEB
- github.com/cline/cline/pull/11724nvdIssue TrackingPatchWEB
- github.com/cline/cline/security/advisories/GHSA-3cj3-hqcr-g934nvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-3cj3-hqcr-g934ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-59723ghsaADVISORY
- github.com/cline/cline/releases/tag/cli-v3.0.30nvdRelease NotesWEB
News mentions
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