obsidianforensics unfurl up to 2025.08 Configuration app.run debug code

Summaryinfo

A vulnerability identified as critical has been detected in obsidianforensics unfurl up to 2025.08. This affects the function app.run of the component Configuration Handler. Performing a manipulation results in debug code. This vulnerability was named CVE-2026-40035. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in obsidianforensics unfurl up to 2025.08. This affects the function app.run of the component Configuration Handler. The manipulation with an unknown input leads to a debug code vulnerability. CWE is classifying the issue as CWE-489. The product is deployed to unauthorized actors with debugging code still enabled or active, which can create unintended entry points or expose sensitive information. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-40035 since 04/08/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/09/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• obsidianforensics

Name

• unfurl

Version

• 2025.08

Website

• Product: https://github.com/obsidianforensics/unfurl/

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