# CVE-2026-19516: CVE-2026-19516 CVE Record

> Attackers can exploit the X-Grafana-URL header to force the MCP server to make requests to internal services, enabling Server-Side Request Forgery and data exfiltration.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Aug 2026
- **Updated:** 27 Aug 2026
- **Also known as:** GHSA-fr94-7cqc-vjrq

## What is CVE-2026-19516?

CVE-2026-19516 is a critical server-side request forgery vulnerability in Grafana MCP Server, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A caller-supplied X-Grafana-URL request header controls the destination of mcp-grafana's outbound requests, and the grafana_api_request tool lets the caller also choose the HTTP method, path, and body. Because the destination is not restricted to the configured Grafana instance, a caller can direct requests at internal, loopback, and link-local network services (including metadata endpoints) and read the responses, resulting in server-side request forgery. The fix for CVE-2026-15583 prevented the configured service-account token from being sent to unintended destinations but did not restrict the destinations themselves.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-19516?


## How do I fix CVE-2026-19516?

No fix has been published for CVE-2026-19516 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-19516 being exploited?

There is no known exploitation of CVE-2026-19516 in the wild and no public exploit code.

Public exploit code:

- CVE-2026-19516 (github_poc): https://github.com/HORKimhab/CVE-2026-19516

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-19516 and fix it if it is affected.

What it is: CVE-2026-19516 is a critical server-side request forgery vulnerability in Grafana MCP Server, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-19516 in the wild and no public exploit code.

Affected product: Grafana MCP Server. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-19516/ (Markdown: https://insights.sbomify.com/CVE-2026-19516/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-19516
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19516
- OSV: https://osv.dev/vulnerability/CVE-2026-19516

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-19516/
Summaries are generated and may contain mistakes; the official description above is the record.