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CVE-2026-40035

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CVE-2026-40035

Published: Apr 8, 2026

Modified: May 8, 2026

PUBLISHED

CVSS v3.1

9.1

CRITICAL

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.

VendorProductVersions

obsidianforensics

unfurl

affected
0 - <= 2025.08

Weaknesses (CWE)

CWE-489

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

References

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