CVE-2026-52830
leshchenko1979 fast-mcp-telegram 취약점
fast-mcp-telegram is a Telegram MCP Server. Prior to 0.19.1, fast-mcp-telegram validates HTTP Bearer tokens by joining the raw token string into a session-file path. The verifier rejects the exact reserved token telegram, but it does not reject path separators or normalize the path before checking whether the session file exists. A remote HTTP client can therefore authenticate as the default legacy session with a token such as ../fast-mcp-telegram/telegram when the documented default session file ~/.config/fast-mcp-telegram/telegram.session exists. This bypasses the reserved session name co...
- 대응 우선순위
- 점검
- CVSS
- 9.4
- EPSS
- 0.55% 백분위 42.5% · 2026.07.29 기준
- CISA KEV
- 미등록
- 조치 기한
- -
- 공개일
- 2026.07.03