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NVD Vulnerability Details :
CVE-2026-42615
Awaiting Analysis
More InfoOfficial Page
Source-cve@mitre.org
View Known Exploited Vulnerability (KEV) details
Published At-29 Apr, 2026 | 04:16
Updated At-30 Apr, 2026 | 15:48

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

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.2HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Type: Secondary
Version: 3.1
Base score: 7.2
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-79Primarycve@mitre.org
CWE ID: CWE-79
Type: Primary
Source: cve@mitre.org
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/gchq/CyberChef/commit/9641ae07f92e9af50f10e978385465b2f4a36c4dcve@mitre.org
N/A
https://github.com/gchq/CyberChef/compare/v10.24.0...v11.0.0cve@mitre.org
N/A
https://github.com/gchq/CyberChef/issues/2344cve@mitre.org
N/A
https://github.com/gchq/CyberChef/pull/2346cve@mitre.org
N/A
Hyperlink: https://github.com/gchq/CyberChef/commit/9641ae07f92e9af50f10e978385465b2f4a36c4d
Source: cve@mitre.org
Resource: N/A
Hyperlink: https://github.com/gchq/CyberChef/compare/v10.24.0...v11.0.0
Source: cve@mitre.org
Resource: N/A
Hyperlink: https://github.com/gchq/CyberChef/issues/2344
Source: cve@mitre.org
Resource: N/A
Hyperlink: https://github.com/gchq/CyberChef/pull/2346
Source: cve@mitre.org
Resource: N/A
Change History
0Changes found
Details not found