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.

INFO

Published Date :

2026-04-08T21:35:27.703Z

Last Modified :

2026-05-08T14:07:04.785Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2026-40035 vulnerability.

Vendors Products
Dfir-unfurl
  • Dfir-unfurl
Ryandfir
  • Unfurl
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-40035.

URL Resource
https://github.com/obsidianforensics/unfurl/security/advisories/GHSA-vg9h-jx4v-cwx2 cve-icon cve-icon cve-icon
https://www.vulncheck.com/advisories/dfir-unfurl-werkzeug-debugger-exposure-via-string-config-parsing cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact