CVE-2022-21169

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.
Prototype Pollution
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.3 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
snykCNA
7.3 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P
CVEADP
---
---
CISA-ADPADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 22%
VendorProductVersion
express_xss_sanitizer_projectexpress_xss_sanitizer
𝑥
< 1.1.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
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
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