CVE-2026-44211: Cline is an autonomous coding agent as an SDK, IDE extension, or CLI assistant

Q: How do I fix CVE-2026-44211?

cline: upgrade to newer than 2.13.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-44211 being exploited?

CVE-2026-44211 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-44211 affect?

CVE-2026-44211 affects cline. Severity is critical (CVSS 9.6). 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 avai

Q: How urgent is CVE-2026-44211?

Priority 40/100. Critical severity; Public exploit reference

This month

CRITICAL 9.6UPGRADE

CVE-2026-44211 is a critical-severity flaw (CVSS 9.6) affecting cline. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 92%)
CISA exploited list	No
Weakness	CWE-306, CWE-1385
Published	2026-06-01
Last modified	2026-07-22

Publisher (CNA): GitHub, Inc. · Vendor: cline

Last updated 2026-07-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-01 17:17 UTCPublished CVE record published
2026-07-22 07:10 UTCUpdated Record last modified

cline cline UPGRADE

Affected: <= 2.13.0

Fixed in: newer than 2.13.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cline || rpm -q cline || cline --version

2. UPGRADE to newer than 2.13.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cline

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cline

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-44211?

cline: upgrade to newer than 2.13.0. Exact commands for each OS are on this page.

Is CVE-2026-44211 being exploited?

CVE-2026-44211 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-44211 affect?

CVE-2026-44211 affects cline. Severity is critical (CVSS 9.6). 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 avai

How urgent is CVE-2026-44211?

Priority 40/100. Critical severity; Public exploit reference

Related CVEs

CVE-2026-59723 HIGH 8.8 UPGRADE Cline is an autonomous coding agent as an SDK, IDE extension, or CLI assistant

References

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