CVE-2021-3666

9.8 criticalEPSS 1.3%

Critical (9.8) in xml body parser project xml body parser. EPSS 1.3% chance of exploitation in the next 30 days. Fixed in body-parser-xml 2.0.3.

body-parser-xml is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Severity

9.8 critical

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

EPSS: 1.3% chance of exploitation in the next 30 days; higher than 70% of CVEs (scores of 2026-10-31)
CWE: CWE-1321
Published: 2021-09-13
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-2ghc-6v89-pw9j	npm	body-parser-xml	<2.0.3	2.0.3