CVE-2022-21169: Express Xss Sanitizer Project Express Xss Sanitizer

Medium severity, CVSS 6.1. EPSS: 1% chance of exploitation in the next 30 days.

The package express-xss-sanitizer before 1.1.3 are vulnerable to Prototype Pollution via the allowedTags attribute, allowing the attacker to bypass xss sanitization.

Affected products

• Express Xss Sanitizer Project Express Xss Sanitizer: before 1.1.3 (fixed in 1.1.3)

Published 2022-09-26. Last modified 2026-06-17.