CVE-2026-44211

FAUCET Score

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.

First published: Jun 1, 2026Last modified: Jun 1, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		<= 2.13.0CPE matchmatch criteria	cpe:2.3:a:cline:cline::::::::

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

Exploitability Score

2.8

Impact Score

6.0

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.18%

Probability of exploitation in next 30 days

EPSS Percentile

7.9%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0018 is in the 3rd percentile among its peer group of 834 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.8 Bluesky, 0.5 Mastodon, and 1.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Vendor Patches (1)

github_advisoryworkaround availablevia nvd_reference

View patch

Vendor Advisories (1)

npmGHSA-5c57-rqjx-35g2critical

Cline Kanban Server has a Cross-Origin WebSocket Hijacking Vulnerability

May 8, 2026

References

github.com / cline/cline/security/advisories/GHSA-5c57-rqjx-35g2

ExploitMitigationVendor Advisory