Hub/AI Security/Advisories/GHSA-qx49-fqc8-xw99
OAuth client could send credentials to an authorization server chosen by the MCP server
MCP Python SDK security advisory.
| GHSA | GHSA-qx49-fqc8-xw99 |
|---|---|
| Published | Sep 28, 2026 |
| Severity | High 7.5 |
| CVE | CVE-2026-115563 |
| Status | patched |
| Affected | >= 2.0.0a1, < 2.2.0, >= 1.9.1, < 1.30.0 |
| Fixed in | 2.2.0, 1.30.0 |
| Component | MCP Python SDK |
Sources
Checked 2026-11-04. We copy severity and fix versions from the source and never estimate them.
Affected tools
Weekly, free
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