CVE-2026-44211Cline Cline Missing Authentication for Critical Function
NVDCVSS scored by security-advisories@github.com
Vulnerability Summary
Cline is an autonomous coding agent as an SDK, IDE extension, or CLI assistant. In versions 2.13.0 and prior, there is a cross-origin WebSocket hijack vulnerability in Cline Kanban servers. At time of publication, there are no publicly available patches.
CVSS v3.1 Base Metrics — Score 9.6 (CRITICAL)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HAttack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
Affected & Patched Versions
- Cline Cline <= 2.13.0
No patched version published yet
Until a fix ships, reduce exposure:
- Restrict access to the affected service or interface to trusted networks.
- Disable the affected feature if you do not need it.
- Watch the vendor advisory for a firmware or software update.
What to do
Prioritize this fix. Exploit code is public, so attacks can follow quickly.
- Check whether you run Cline Cline and which version.
- No patched version is listed yet. Limit access to the affected service to trusted networks, and disable the feature if you can.
- Subscribe to the vendor advisory so you learn when a fix ships.
- Review logs and exposed services for signs of earlier compromise.
Timeline
- Jun 1, 2026Published
- Jul 22, 2026Record last modified
Score, severity and exploitation changes are tracked from the day Watchtower started logging them.
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Data last checked: Nov 14, 2026 07:11 UTC