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.

Remediation

References

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

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

https://runkit.com/embed/w306l6zfm7tu

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

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Severity

High

Classification

CWE-1321 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Tags

Patch Third Party Advisory Exploit Issue Tracking URL Repurposed