CVE-2026-90620 0x4m4 HexStrike AI API Command Endpoint hexstrike_server.py missing authentication
Remote attackers can execute arbitrary commands via the unauthenticated API endpoint in HexStrike AI, leading to full system compromise.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-90620?
CVE-2026-90620 is a medium-severity missing authorization vulnerability in 0x4m4 HexStrike AI, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was determined in 0x4m4 HexStrike AI up to d689933ff579d839c676c82b231f8e98326c5f04. The impacted element is an unknown function of the file hexstrike_server.py of the component API Command Endpoint. This manipulation causes missing authentication. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-90620?
How do I fix CVE-2026-90620?
No fix has been published for CVE-2026-90620 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-90620 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90620 exists.
Sources
Also known as GHSA-54w5-mmvv-3mhc.