CVE-2022-21169

    Dashboard / Vulnerabilities / CVE-2022-21169

    CVE-2022-21169

    Published: 26 Sept 2022Last Modified: 12 Aug 2026

    Summary: Prototype Pollution

    Details: 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: https://runkit.com/embed/w306l6zfm7tu, https://security.snyk.io/vuln/SNYK-JS-EXPRESSXSSSANITIZER-3027443, https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/21xxx/CVE-2022-21169.json, https://nvd.nist.gov/vuln/detail/CVE-2022-21169, https://github.com/AhmedAdelFahim/express-xss-sanitizer/issues/4, https://github.com/AhmedAdelFahim/express-xss-sanitizer/commit/3bf8aaaf4dbb1c209dcb8d87a82711a54c1ab39a

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -a90ee0b5ac15fa1b300663d49d5b8b0d6f242d23

    Affected versions

    v1.1.2
    v1.1.1
    v1.1.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2022-21169 | CVE-DB