gchq/cyberchef · Security
CyberChef has a Cross-site Scripting issue
- GHSA ID
- GHSA-h4hv-92pp-pcjg
- CVE ID
- CVE-2026-42615
- Severity
- high
- Published
- Updated
- CVSS
- 7.2 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- CVSS v3
- 7.2 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Description
GCHQ CyberChef before 11.0.0 allows XSS via Show Base64 offsets, as demonstrated by the /#recipe=Show_Base64_offsets('%3Cscript substring.
CWEs
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-42615 ↗
- https://github.com/gchq/CyberChef/issues/2344 ↗
- https://github.com/gchq/CyberChef/pull/2346 ↗
- https://github.com/gchq/CyberChef/commit/9641ae07f92e9af50f10e978385465b2f4a36c4d ↗
- https://github.com/gchq/CyberChef/compare/v10.24.0...v11.0.0 ↗
- https://github.com/advisories/GHSA-h4hv-92pp-pcjg ↗