CVE-2026-42615 HIGH

CVE-2026-42615

Vendor Gchq
Product CyberChef
Weakness CWE-79 · XSS
Published April 29, 2026
Last update April 29, 2026
View on NVD All CVEs

CVSS base score

7.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

April 29, 2026 CVE published
April 29, 2026 Record updated