CVE-2026-57439
MEDIUM SEVERITYCVSS Score & Metrics
Base Score
5.0 / 10
Vector String
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Vulnerability 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.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-79
Source
NVD
Vendor
gchq
Product
CyberChef
External References
- https://github.com/gchq/CyberChef/commit/85db3be5d0096859b810f0e8d3e151d5dc9b948f
- https://github.com/gchq/CyberChef/issues/2568
- https://github.com/gchq/CyberChef/pull/2569
- https://github.com/gchq/CyberChef/releases/tag/v11.2.0
- https://github.com/gchq/CyberChef/security/advisories/GHSA-fx6f-382r-j72c
- https://github.com/gchq/CyberChef/security/advisories/GHSA-fx6f-382r-j72c
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