by Kastro
Paper/Archive/CVE-2026-44211

CVE-2026-44211

cline cline — Cline Kanban Server has a Cross-Origin WebSocket Hijacking Vulnerability

EPSS 0.2%public exploitCVSS 9.6
critical.is priorityof 100
40
CVSS 9.6 (CNA)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 7.6.076 × 201.5Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
cline<= 2.13.0–CNA

Scores by source

GitHub_M (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

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