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CVE

CVE-2026-47429

Vitest: Arbitrary file can be read and executed when Vitest UI server is listening
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CVE

CVE-2026-47429

Vitest: Arbitrary file can be read and executed when Vitest UI server is listening

Vitest is a testing framework powered by Vite. Prior to 3.2.5 and 4.1.0, the Vitest UI/API server on Windows used isFileServingAllowed incorrectly for /_vitestattachment__, allowing \?\..\ path traversal to read files outside the project; exposed API write and rerun features such as saveTestFile and rerun could also allow arbitrary script execution. This issue is fixed in versions 3.2.5 and 4.1.0.

Package Versions Affected

Package Version
patch Availability
h3
Available
Available by request
ohmyfetch
Available
Available by request
serve-placeholder
Available
Available by request
node-fetch-native
Available
Available by request
serve-placeholder
Available
Available by request

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Related Resources

No items found.

References

https://github.com/vitest-dev/vitest/releases/tag/v3.2.5, https://github.com/vitest-dev/vitest/releases/tag/v4.1.0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47429.json, https://github.com/vitest-dev/vitest/security/advisories/GHSA-5xrq-8626-4rwp, https://nvd.nist.gov/vuln/detail/CVE-2026-47429, https://github.com/vitest-dev/vitest/commit/20e00ef7808de6d330c5e2fda530f686e08f1c8d, https://github.com/vitest-dev/vitest/commit/af88b1f5d82844a4761ea9a977156c98e2b14ca8, https://github.com/vitest-dev/vitest/pull/10445, https://github.com/vitest-dev/vitest/pull/9350

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.00922%
EPSS Percentile
0.57844%
Introduced Version
da7ce1712fd4d0e4e807ec01ce755581e6892d5b,0
Fix Available
af88b1f5d82844a4761ea9a977156c98e2b14ca8,18.11.6-r7,19.0.3-r3,19.1.2-r2,18.11.6-r3,19.0.3-r4,19.1.1-r3,19.2.1-r1,2.95.12-r25,2.95.12-r27,23.0.4-r8

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