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CVE PROGRAM SOURCE RECORD9.3 Critical

CVE-2026-40035

Unfurl - Werkzeug Debugger Exposure via String Config Parsing

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

obsidianforensics unfurl

Default version status: unaffected

  • 0 to ≤ 2025.08affected
pkg:pypi/dfir-unfurl

References