CVE-2026-42615
CVSS Score
7.2
EPSS Score
0.0%
EPSS Percentile
0th
GCHQ CyberChef before 11.0.0 allows XSS via Show Base64 offsets, as demonstrated by the /#recipe=Show_Base64_offsets('%3Cscript substring.
| CWE | CWE-79 |
| Vendor | gchq |
| Product | cyberchef |
| Published | Apr 29, 2026 |
| Last Updated | Apr 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
GCHQ / CyberChef
0 < 11.0.0