CVE-2026-42615
HIGH
7.2
CVSS Score
Published: April 29, 2026 at 02:55 AM UTC
Updated: July 24, 2026 at 08:20 PM UTC
1 product affected across 1 vendorCyberChef
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Severity
HIGH7.2
Exploit prediction
EPSS 0.3%
SSVC
No known exploit
Description
GCHQ CyberChef before 11.0.0 allows XSS via Show Base64 offsets, as demonstrated by the /#recipe=Show_Base64_offsets('%3Cscript substring.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (4)
Source: cverecord
https://github.com/gchq/CyberChef/issues/2344Source: cverecord
https://github.com/gchq/CyberChef/compare/v10.24.0...v11.0.0Source: cverecord
https://github.com/gchq/CyberChef/pull/2346SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.2HIGHmitre
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusAWAITING ANALYSIS
CWE
CWE-79
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