express-xss-sanitizer vulnerable to Prototype Pollution via allowedTags attribute

2022-09-2700:00:22

CWE-1321

GitHub Advisory Database

github.com

express-xss-sanitizer

prototype pollution

allowedtags

bypass

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 is vulnerable to Prototype Pollution via the allowedTags attribute, allowing the attacker to bypass xss sanitization.

Affected configurations

Vulners

Node

express_xss_sanitizer_projectexpress_xss_sanitizerRange<1.1.3node.js

VendorProductVersionCPE
express_xss_sanitizer_projectexpress_xss_sanitizer*cpe:2.3:a:express_xss_sanitizer_project:express_xss_sanitizer:*:*:*:*:*:node.js:*:*