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CVE-2026-53633

9.8 · CRITICAL

Vitest is a testing framework powered by Vite.

Published Jul 14, 2026CWE-749EPSS 0.90%

Overview

CVE-2026-53633 is a critical-severity vulnerability. It was published on July 14, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Vitest is a testing framework powered by Vite. From 3.0.0 until 3.2.5, 4.1.8, and 5.0.0-beta.4, Vitest Browser Mode exposed a cdp() API that forwarded raw Chrome DevTools Protocol methods without being gated by allowWrite or allowExec, allowing a remote client with exposed browser API metadata to use CDP Page.setDownloadBehavior and Runtime.evaluate to overwrite vite.config.ts and execute attacker-controlled Node.js code. This issue is fixed in versions 3.2.5, 4.1.8, and 5.0.0-beta.

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/vitest-dev/vitest/commit/385a1aefd4c2bfa5e7d58bf7c6834c929969f2c7GitHubgithub.com/vitest-dev/vitest/commit/63e3b2eee4d58da56786a6333f517b9b492528c7GitHubgithub.com/vitest-dev/vitest/commit/e4067b3b150005fd42cf75f994300119245806b9GitHubgithub.com/vitest-dev/vitest/pull/10444GitHubgithub.com/vitest-dev/vitest/pull/10450GitHubgithub.com/vitest-dev/vitest/pull/10456GitHubgithub.com/vitest-dev/vitest/releases/tag/v3.2.5GitHubgithub.com/vitest-dev/vitest/releases/tag/v4.1.8GitHubgithub.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.4GitHubgithub.com/vitest-dev/vitest/security/advisories/GHSA-g8mr-85jm-7xhm

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53633?

CVE-2026-53633 is a critical-severity vulnerability. It was published on July 14, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-53633?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-53633?

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-2026-53633?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53633 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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