CVE-2022-21169

Prototype Pollution

CVSS 7.3 HIGHEPSS 0.7%CWE-1321

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.3EPSS 0.7%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

26 Sep 2022Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P

Affected products

n/a · express-xss-sanitizer

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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