CVE-2022-21169
Prototype Pollution
MEDIUM 6.1EPSS 1.0%
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
- express-xss-sanitizer
- CVSS v3.1 NVD
- 6.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS v3.1 SNYK
- 7.3 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - EPSS
- 0.95% chance of exploitation in the next 30 days, 61st percentile
- Published
- 2022-09-26
- Updated
- 2025-05-21
Proof-of-concept exploits (2)
- AhmedAdelFahim/express-xss-sanitizer/issues/428★ · 2026-03-25
- https://security.snyk.io/vuln/SNYK-JS-EXPRESSXSSSANITIZER-3027443