CVE-2025-59364

5.3 mediumEPSS 0.4%

Medium (5.3). EPSS 0.4% chance of exploitation in the next 30 days. Fixed in express-xss-sanitizer 2.0.1.

The express-xss-sanitizer (aka Express XSS Sanitizer) package through 2.0.0 for Node.js has an unbounded recursion depth in sanitize in lib/sanitize.js for a JSON request body.

Severity

CVSS 3.1

5.3 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-31)
CWE: CWE-674
Published: 2025-09-14
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Packages (OSV)

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-hvq2-wf92-j4f3	npm	express-xss-sanitizer	<2.0.1	2.0.1

References

https://gist.github.com/Spendroslav/177804eaef5acfb222a550de212a1b94
https://github.com/AhmedAdelFahim/express-xss-sanitizer
https://www.npmjs.com/package/express-xss-sanitizer

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