CVE-2026-44363

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 57/100
Published: 2026-05-13 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Adjacent Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Adjacent
AC: Low
PR: None
UI: None
S: X
AT: Present
VC: Low
VI: None
VA: None

Description

MISP modules are autonomous modules that can be used to extend MISP for new services. Prior to 3.0.7, an unsafe remote resource fetching vulnerability existed in MISP Modules expansion modules. The html_to_markdown module accepted arbitrary HTTP(S) URLs without sufficient validation, which could allow Server-Side Request Forgery against loopback, private, or link-local network resources. Additionally, the qrcode module disabled TLS certificate verification when retrieving remote images, exposing requests to potential man-in-the-middle interception or response tampering. The issue was fixed by validating URL schemes, blocking local and private address ranges, resolving hostnames before fetching, enforcing request timeouts, and re-enabling TLS certificate verification. This vulnerability is fixed in 3.0.7.

Weakness Classification (2)

Bug Bounty Relevance

57 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

5.8 / 10.0 v4.0
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.10%
Raw Score 0.001020
Percentile 0.9%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00102
2026-10-28
0.00102

Intelligence Sources

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