CVE-2022-21169 Prototype Pollution

2022-09-2605:05:11

snyk

www.cve.org

cve-2022-21169

prototype pollution

express-xss-sanitizer

allowedtags attribute

xss sanitization

CVSS3

7.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

EPSS

0.001

Percentile

45.1%

JSON

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.

CNA Affected

[
  {
    "product": "express-xss-sanitizer",
    "vendor": "n/a",
    "versions": [
      {
        "lessThan": "1.1.3",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]