CVE•Published 2026-06-01•Modified 2026-07-22•1 article on news•5 live references•NVD data

CVE-2026-44211Cline · Cline

Vulnerability data via NVD (ingested)

CVSS v3.1

9.6

CRITICAL

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

EPSS percentile

Exploit Prediction Scoring System · top 92% of all CVEs

Weaknesses (CWE)

CWE-306Missing Authentication for Critical Function CWE-1385Missing Origin Validation in WebSockets

Description

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.

Timeline

Published 2026-06-01

Modified 2026-07-22

External references

NVD MITRE Exploit-DB trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-44211

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Cline Cline"

All exposed Cline Cline instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Cline"

HTTP body or banner mentions "Cline" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-44211