CVE-2025-59364
EPSS 0.01%express-xss-sanitizer has an unbounded recursion depth
Description
# Security Advisory: express-xss-sanitizer ## Overview A vulnerability was discovered in express-xss-sanitizer that allowed unbounded recursion depth during sanitization of nested objects. ## Affected Versions - All versions prior to 2.0.1 ## Patched Versions - 2.0.1 and later ## Description The sanitize function in lib/sanitize.js performed recursive sanitization without depth limiting, making it vulnerable to stack overflow attacks via specially crafted deeply nested JSON objects. ## Impact An attacker could cause denial-of-service by sending a request with deeply nested structures, potentially crashing the Node.js process. ## Solution Upgrade to version 2.0.1 or later: ```bash npm install express-xss-sanitizer@latest ```
Affected packages (1)
- npm/express-xss-sanitizerfrom 0, < 2.0.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
References (9)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-59364
- PATCHhttps://github.com/AhmedAdelFahim/express-xss-sanitizer
- WEBhttps://dbugs.ptsecurity.com/vulnerability/PT-2025-37434
- WEBhttps://gist.github.com/Spendroslav/177804eaef5acfb222a550de212a1b94
- WEBhttps://github.com/AhmedAdelFahim/express-xss-sanitizer/commit/62d6542a2a57298da7a2e02de623454007e4f6d6
- WEBhttps://github.com/AhmedAdelFahim/express-xss-sanitizer/pull/23
- WEBhttps://github.com/AhmedAdelFahim/express-xss-sanitizer/security/advisories/GHSA-hvq2-wf92-j4f3
- WEBhttps://www.npmjs.com/package/express-xss-sanitizer
- WEBhttps://www.tenable.com/cve/CVE-2025-59364