CVE-2026-57439
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
35/100
Published: 2026-07-08
Modified: 2026-10-25
First seen: 2026-10-29
Status: active
Attack Surface
Low Complexity
No Auth
Scope Change
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
None
UI:
Required
S:
Changed
C:
Low
I:
Low
A:
None
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.