CVE-2026-53633
Medium
Elevated severity or exploit probability.
CVSS base
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.9%
57.8th percentile
CISA KEV
Not listed
Weakness / dates
CWE-749
Published 2026-07-14 · modified 2026-07-29
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.
References
- https://github.com/vitest-dev/vitest/commit/385a1aefd4c2bfa5e7d58bf7c6834c929969f2c7
- https://github.com/vitest-dev/vitest/commit/63e3b2eee4d58da56786a6333f517b9b492528c7
- https://github.com/vitest-dev/vitest/commit/e4067b3b150005fd42cf75f994300119245806b9
- https://github.com/vitest-dev/vitest/pull/10444
- https://github.com/vitest-dev/vitest/pull/10450
- https://github.com/vitest-dev/vitest/pull/10456
- https://github.com/vitest-dev/vitest/releases/tag/v3.2.5
- https://github.com/vitest-dev/vitest/releases/tag/v4.1.8
- https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.4
- https://github.com/vitest-dev/vitest/security/advisories/GHSA-g8mr-85jm-7xhm