Dashboard / CVE-2026-40036

CVE-2026-40036

HIGH
MEDIUM Priority: 0.04 BB Relevance: 78/100
Published: 2026-04-08 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
AT: None
VC: None
VI: None
VA: High

Description

Unfurl before 2026.04 contains an unbounded zlib decompression vulnerability in parse_compressed.py that allows remote attackers to cause denial of service. Attackers can submit highly compressed payloads via URL parameters to the /json/visjs endpoint that expand to gigabytes, exhausting server memory and crashing the service.

Weakness Classification (2)

Affected Software (1)

VendorProductVersion
obsidianforensics unfurl 0 < 2026.04

References & Advisories (3)

Bug Bounty Relevance

78 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.7 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.52%
Raw Score 0.005170
Percentile 44.5%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00517
2026-11-12
0.00517
2026-11-10
0.00517
2026-11-09
0.00517
2026-11-08
0.00517

Intelligence Sources

mitre ref →

External Links