CVE-2023-26920

PoC —

CVSS 3.1

6.5 medium

EPSS

1%p65

Published

Dec 12, 2023 (Dec 12, 2023)

Modified

Jun 17, 2026

Description

fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.

Vendors: naturalintelligence
Products: fast xml parser
Weakness: CWE-1321
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (1.2%)

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