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.

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-empt…

EPSS: 0.002 (39.3th percentile) — read the EPSS interpretation.

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.

Affected products

Obsidianforensics Unfurl — versions 0

Weakness classification (CWE)

CWE-489 — Active Debug Code

References

GHSA Advisory GHSA-vg9h-jx4v-cwx2 (vendor-advisory)
VulnCheck Advisory: dfir-unfurl - Werkzeug Debugger Exposure via String Config Parsing (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.