VULNERABILITY INTELLIGENCE
CVE-2026-72912
CVSS score4.3 MEDIUM
EPSS probability0.32%
CISA KEVNot currently listed
Published2026-08-10
Last modified2026-10-23
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Description
CyberChef is a web app for encryption, encoding, compression, and data analysis. Prior to 11.3.0, CyberChef's pretty-recipe parser in src/core/Utils.mjs can exhaust client-side CPU 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. This issue is fixed in version 11.3.0.
Weakness classification
- CWE-400: Uncontrolled Resource Consumption
- CWE-1333: Inefficient Regular Expression Complexity