CyberChef vulnerabilities
3 known CVE vulnerabilities in CyberChef, translated and rated.
- CVE-2026-72912Medium
CyberChef prior to 11.3.0 has a client-side CPU exhaustion vulnerability in the pretty-recipe parser in src/core/Utils.mjs when a malformed #recipe= URL fragment containing a large number of unmatched quote characters reaches Utils.parseRecipeConfig(). The function synchronously applies a complex global regular expression that may perform heavy backtracking before rejecting the input, causing the victim's browser tab to freeze during startup for seconds or longer. No code execution, data exfiltration, or privilege escalation occurs.
- CVE-2026-57439Medium
CyberChef before version 11.2.0 contains a prototype pollution vulnerability in the Series Chart operation, which accepts the __proto__ key when parsing user-supplied CSV. This can be chained with other operations like Parse UDP to inject malicious JavaScript into HTML output.
- CVE-2026-42615High
GCHQ CyberChef before version 11.0.0 contains an XSS vulnerability via the Show Base64 offsets function, allowing script injection.