CVE-2026-34476: Apache SkyWalking MCP: Server-Side Request Forgery via SW-URL Header in MCP Server

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-13 · updated 2026-10-26
Weakness: CWE-918

Description

Server-Side Request Forgery via SW-URL Header 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.

Affected products

Apache Software Foundation Apache SkyWalking MCP: from 0.1.0 before 0.2.0 — fixed in 0.2.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache SkyWalking MCP 0.2.0. Check the vendor advisory for mitigations.

References

https://lists.apache.org/thread/v0k1xyzzbtnpyrwxwyn36pbspr8rhjnr
http://www.openwall.com/lists/oss-security/2026/04/13/4

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