CVE-2026-34884 Apache SkyWalking MCP: SSRF via set_skywalking_url Tool and GraphQL Expression Injection in MCP Server
Attackers can exploit SSRF and GraphQL injection in Apache SkyWalking MCP to access internal resources or execute code.
- 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-2026-34884?
CVE-2026-34884 is a critical server-side request forgery vulnerability in Apache SkyWalking MCP, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
SSRF via set_skywalking_url Tool and GraphQL expression injection vulnerability in Apache SkyWalking MCP.
This issue affects Apache SkyWalking MCP: 0.1.0.
Users are recommended to upgrade to version 0.2.0, which fixes this issue.
Weakness: CWE-918
Which versions are affected by CVE-2026-34884?
It affects 1 product.
Products include Apache Skywalking Mcp.
How do I fix CVE-2026-34884?
No fix has been published for CVE-2026-34884 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-2026-34884 being exploited?
There is no known exploitation of CVE-2026-34884 in the wild and no public exploit code.
Other vulnerabilities in Apache SkyWalking MCP
Sources
Also known as GHSA-fvf9-f2mx-m7qp.