CVE-2026-19373 PhialsBasement KoboldCPP-MCP-Server BaseConfigSchema index.ts makeRequest server-side request forgery
Attackers can exploit a server-side request forgery vulnerability in the makeRequest function to access internal resources or bypass security controls.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19373?
CVE-2026-19373 is a medium-severity server-side request forgery vulnerability in PhialsBasement KoboldCPP-MCP-Server, published on 9 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A weakness has been identified in PhialsBasement KoboldCPP-MCP-Server 1.0.0. Affected by this issue is the function makeRequest of the file src/index.ts of the component BaseConfigSchema. Executing a manipulation of the argument apiUrl can lead to server-side request forgery. It is possible to launch the attack on the local host. 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-2026-19373?
How do I fix CVE-2026-19373?
No fix has been published for CVE-2026-19373 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-2026-19373 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19373 exists.
Sources
Also known as GHSA-m2hf-r4mh-rrq8.