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CVE-2026-42615

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CVE-2026-42615

Published: Apr 29, 2026

Modified: Apr 29, 2026

PUBLISHED

CVSS v3.1

7.2

HIGH

Description

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

VendorProductVersions

GCHQ

CyberChef

affected
0 - < 11.0.0

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

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

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