CVE-2026-10280 horizon921 mcpilot MCP API Call Endpoint route.ts server-side request forgery
Remote attackers can exploit server-side request forgery in the MCP API Call Endpoint to access internal resources or bypass security controls.
- 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-2026-10280?
CVE-2026-10280 is a medium-severity server-side request forgery vulnerability in horizon921 mcpilot, published on 1 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security flaw has been discovered in horizon921 mcpilot 0.1.0. The impacted element is an unknown function of the file client/src/app/api/mcp/call/route.ts of the component MCP API Call Endpoint. The manipulation of the argument serverBaseUrl results in server-side request forgery. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Weakness: CWE-918
Which versions are affected by CVE-2026-10280?
How do I fix CVE-2026-10280?
No fix has been published for CVE-2026-10280 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-2026-10280 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10280 exists.
Sources
Also known as GHSA-6w53-8mcc-fqqh.