CVE-2026-57439EPSS p14.2%

CVE-2026-57439CVE-2026-57439

Description

CyberChef is a web app for encryption, encoding, compression, and data analysis. Prior to 11.2.0, the Series Chart operation accepts __proto__ as a key while parsing user-supplied CSV, allowing prototype pollution that can be chained with operations such as Parse UDP to inject malicious JavaScript into HTML output. This issue is fixed in version 11.2.0.

Scoring

CVSS 5.0 ()
VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS0.24% probability of exploitation · percentile 14.2% · 2026-10-05T12:00:23Z
Last modified2026-07-10
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.