CVE-2022-21169

medium

Description

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.

References

Advisories
More

https://runkit.com/embed/w306l6zfm7tu

https://github.com/AhmedAdelFahim/express-xss-sanitizer/commit/3bf8aaaf4dbb1c209dcb8d87a82711a54c1ab39a

https://security.snyk.io/vuln/SNYK-JS-EXPRESSXSSSANITIZER-3027443

https://github.com/AhmedAdelFahim/express-xss-sanitizer/issues/4

Details

Source: Mitre, NVD

Published: 2022-09-26

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

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