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Advisories

Unfurl - Werkzeug Debugger Exposure via String Config Parsing

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severity
critical
date
Affecting

  • dfir-unfurl <= 2025.08

CWE
  • CWE-489 Active Debug Code
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Credit
Mobasi Security Team
Description
Unfurl through 2025.08 contains an improper input validation vulnerability in config parsing that enables Flask debug mode by default. The debug configuration value is read as a string and passed directly to app.run(), causing any non-empty string to evaluate truthy, allowing attackers to access the Werkzeug debugger and disclose sensitive information or achieve remote code execution.

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