CVE-2022-21169 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00478.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

express-xss-sanitizer

affected

Version	Status	Constraints
`unspecified`	affected	< 1.1.3

Configuration 1 [-]

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

No data.

No data.

Project Subscriptions

Vendors	Products
Express Xss Sanitizer Project Subscribe	Express Xss Sanitizer Subscribe

Advisories

Source	ID	Title
EUVD	EUVD-2022-6830	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.
Github GHSA	GHSA-grjp-4jmr-mjcw	express-xss-sanitizer vulnerable to Prototype Pollution via allowedTags attribute

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
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

History

Wed, 21 May 2025 21:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: snyk

Published: 2022-09-26T05:05:11.200Z

Updated: 2025-05-21T20:29:25.084Z

Reserved: 2022-02-24T00:00:00.000Z

Link: CVE-2022-21169

Vulnrichment

Updated: 2024-08-03T02:31:59.240Z

NVD

Status : Modified

Published: 2022-09-26T05:15:10.133

Modified: 2025-05-21T21:15:55.157

Link: CVE-2022-21169

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-1321

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