Vulnerability in Obsidianforensics Unfurl
CVE-2026-40035
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.007 (52.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.002
Affected products
- Obsidianforensics Unfurl — versions 0
- Ryandfir Unfurl
Weakness classification (CWE)
References
- GHSA Advisory GHSA-vg9h-jx4v-cwx2 (vendor-advisory, Exploit, Vendor Advisory)
- VulnCheck Advisory: dfir-unfurl - Werkzeug Debugger Exposure via String Config Parsing (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-40035?
- CVE-2026-40035 is a critical-severity vulnerability in Obsidianforensics Unfurl, classified under Active Debug Code. CVSS score: 9.1/10. Published 2026-04-08.
- How severe is CVE-2026-40035?
- Critical severity. CVSS v3 base score is 9.1 out of 10.