CVE-2022-21144

Denial of Service (DoS)

7.5 HighFix available

This affects all versions of package libxmljs. When invoking the libxmljs.parseXml function with a non-buffer argument the V8 code will attempt invoking the .toString method of the argument. If the argument's toString value is not a Function object V8 will crash.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

1.92%Up 1.0 points since May 2, 2022

What each source reports

CVE List Score used 7.5

Denial of Service (DoS)

Record: CVE-2022-21144
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P
Updated: 2026-11-02

EUVDEUVD-2022-2933 7.5

Record: EUVD-2022-2933
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P
Updated: 2026-11-03

GitHub AdvisoriesGHSA-773h-w45w-f2f9 7.5

Denial of service vulnerability exists in libxmljs

libxmljs provides libxml bindings for v8 javascript engine. This affects all versions of package libxmljs. When invoking the libxmljs.parseXml function with a non-buffer argument the V8 code will attempt invoking the .toString method of the argument. If the argument's toString value is not a Function object V8 will crash.

Record: GHSA-773h-w45w-f2f9
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-20
Updated: 2026-11-02

NVD 7.5

Record: CVE-2022-21144
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-20
Updated: 2026-11-02

OSV 7.5

Denial of Service (DoS)

Record: CVE-2022-21144
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P
Updated: 2026-11-02

OSVGHSA-773h-w45w-f2f9 7.5

Denial of service vulnerability exists in libxmljs

Record: GHSA-773h-w45w-f2f9
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-20
Updated: 2026-11-02

Affected products

libxmljs project libxmljs

Affected packages

Affected packages
Package	Affected	Fixed
`libxmljs` npm	before 0.19.8	0.19.8

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-21144 is a high vulnerability (CVSS 7.5) in Libxmljs Project Libxmljs, published May 1, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.92%, the 80th percentile. Fixed in libxmljs 0.19.8.