CVE-2026-44363 Unsafe remote resource fetching in expansion misp-modules
Attackers can exploit unsafe URL fetching in MISP modules to access internal network resources or intercept traffic via disabled TLS verification.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-44363?
CVE-2026-44363 is a medium-severity server-side request forgery vulnerability in misp-modules, published on 13 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-44363?
3 open source packages ship an affected version, including misp-modules.
| Package | Affected | Fixed in |
|---|---|---|
misp-modules PyPI | All versions to 3.0.7 | None |
misp-modules PyPI | All versions to 3.0.7 | None |
misp-modules PyPI | All versions to 3.0.7 | None |
How do I fix CVE-2026-44363?
No fix has been published for CVE-2026-44363 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-44363 being exploited?
There is no known exploitation of CVE-2026-44363 in the wild and no public exploit code.
Sources
Also known as GHSA-fhq3-2gf3-8f3j, PYSEC-2026-2650.