CVE-2026-42615

Published: Apr 29, 2026Modified: Jul 24, 2026

7.2

Vector

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

Exploitability: 3.9 / Impact: 2.7

Source: MITRE (Secondary)

Description

GCHQ CyberChef before 11.0.0 allows XSS via Show Base64 offsets, as demonstrated by the /#recipe=Show_Base64_offsets('%3Cscript substring.

Related CWEs

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (4)

https://github.com/gchq/CyberChef/commit/9641ae07f92e9af50f10e978385465b2f4a36c4d

Source: cve@mitre.org

https://github.com/gchq/CyberChef/compare/v10.24.0...v11.0.0

Source: cve@mitre.org

https://github.com/gchq/CyberChef/issues/2344

Source: cve@mitre.org

https://github.com/gchq/CyberChef/pull/2346

Source: cve@mitre.org

Timeline

No history available yet.