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6 vulnerabilities found for CyberChef by gchq
CVE-2026-57439 (GCVE-0-2026-57439)
Vulnerability from nvd – Published: 2026-07-08 14:58 – Updated: 2026-07-08 16:12
VLAI
EPSS
VEX
Title
CyberChef: Prototype pollution in Series Chart operation
Summary
CyberChef is a web app for encryption, encoding, compression, and data analysis. Prior to 11.2.0, the Series Chart operation accepts __proto__ as a key while parsing user-supplied CSV, allowing prototype pollution that can be chained with operations such as Parse UDP to inject malicious JavaScript into HTML output. This issue is fixed in version 11.2.0.
Severity
5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/gchq/CyberChef/security/adviso… | x_refsource_CONFIRM |
| https://github.com/gchq/CyberChef/issues/2568 | x_refsource_MISC |
| https://github.com/gchq/CyberChef/pull/2569 | x_refsource_MISC |
| https://github.com/gchq/CyberChef/commit/85db3be5… | x_refsource_MISC |
| https://github.com/gchq/CyberChef/releases/tag/v11.2.0 | x_refsource_MISC |
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CVE-2026-42615 (GCVE-0-2026-42615)
Vulnerability from nvd – Published: 2026-04-29 02:55 – Updated: 2026-04-29 13:14
VLAI
EPSS
VEX
Summary
GCHQ CyberChef before 11.0.0 allows XSS via Show Base64 offsets, as demonstrated by the /#recipe=Show_Base64_offsets('%3Cscript substring.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
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CVE-2019-15532 (GCVE-0-2019-15532)
Vulnerability from nvd – Published: 2019-08-26 11:45 – Updated: 2024-08-05 00:49
VLAI
EPSS
VEX
Summary
CyberChef before 8.31.2 allows XSS in core/operations/TextEncodingBruteForce.mjs.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/gchq/CyberChef/issues/544 | x_refsource_MISC |
| https://github.com/gchq/CyberChef/issues/539 | x_refsource_MISC |
| https://github.com/gchq/CyberChef/commit/01f0625d… | x_refsource_MISC |
| https://github.com/gchq/CyberChef/compare/v8.31.1… | x_refsource_MISC |
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CVE-2026-57439 (GCVE-0-2026-57439)
Vulnerability from cvelistv5 – Published: 2026-07-08 14:58 – Updated: 2026-07-08 16:12
VLAI
EPSS
VEX
Title
CyberChef: Prototype pollution in Series Chart operation
Summary
CyberChef is a web app for encryption, encoding, compression, and data analysis. Prior to 11.2.0, the Series Chart operation accepts __proto__ as a key while parsing user-supplied CSV, allowing prototype pollution that can be chained with operations such as Parse UDP to inject malicious JavaScript into HTML output. This issue is fixed in version 11.2.0.
Severity
5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/gchq/CyberChef/security/adviso… | x_refsource_CONFIRM |
| https://github.com/gchq/CyberChef/issues/2568 | x_refsource_MISC |
| https://github.com/gchq/CyberChef/pull/2569 | x_refsource_MISC |
| https://github.com/gchq/CyberChef/commit/85db3be5… | x_refsource_MISC |
| https://github.com/gchq/CyberChef/releases/tag/v11.2.0 | x_refsource_MISC |
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CVE-2026-42615 (GCVE-0-2026-42615)
Vulnerability from cvelistv5 – Published: 2026-04-29 02:55 – Updated: 2026-04-29 13:14
VLAI
EPSS
VEX
Summary
GCHQ CyberChef before 11.0.0 allows XSS via Show Base64 offsets, as demonstrated by the /#recipe=Show_Base64_offsets('%3Cscript substring.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
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CVE-2019-15532 (GCVE-0-2019-15532)
Vulnerability from cvelistv5 – Published: 2019-08-26 11:45 – Updated: 2024-08-05 00:49
VLAI
EPSS
VEX
Summary
CyberChef before 8.31.2 allows XSS in core/operations/TextEncodingBruteForce.mjs.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/gchq/CyberChef/issues/544 | x_refsource_MISC |
| https://github.com/gchq/CyberChef/issues/539 | x_refsource_MISC |
| https://github.com/gchq/CyberChef/commit/01f0625d… | x_refsource_MISC |
| https://github.com/gchq/CyberChef/compare/v8.31.1… | x_refsource_MISC |
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