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CVE-2026-59723

8.8 · HIGH

Cline is an autonomous coding agent as an SDK, IDE extension, or CLI assistant.

Published Jul 8, 2026CWE-346EPSS 0.25%

Overview

CVE-2026-59723 is a high-severity vulnerability. It was published on July 8, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Cline is an autonomous coding agent as an SDK, IDE extension, or CLI assistant. Prior to 3.0.30, the Cline Hub dashboard server launched by the cline dashboard command accepts WebSocket connections on the /browser endpoint without validating the Origin header, and when ROOM_SECRET is unset for local 127.0.0.1 binds, isAuthorizedBrowserRequest() allows attacker-controlled websites to send desktopCommand frames that read workspace state, mutate MCP and provider settings, and trigger command execution when a provider or model is configured. This issue is fixed in version 3.0.30.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/cline/cline/commit/d09270940f5746f288cfc4a5039b46a2f4d5d01eGitHubgithub.com/cline/cline/pull/11724GitHubgithub.com/cline/cline/releases/tag/cli-v3.0.30GitHubgithub.com/cline/cline/security/advisories/GHSA-3cj3-hqcr-g934GitHubgithub.com/cline/cline/security/advisories/GHSA-3cj3-hqcr-g934

How CyberStrike helps

Frequently asked questions

What is CVE-2026-59723?

CVE-2026-59723 is a high-severity vulnerability. It was published on July 8, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-59723?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-59723?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-59723?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-59723 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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