CVE-2026-108586Published
1MCP Agent 0.20.0 through 0.39.0 OAuth Tag-Scope Bypass via Negated Tag Filter
Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.
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CVE-2026-108586 · Microsoft / collected KEV context
cve-program · CVE-2026-108586
- https://hackmd.io/@haind/1mcp-negated-tag-filter-oauth-scope-bypass
- https://github.com/1mcp-app/agent/blob/v0.39.0/src/sdk/legacy/transport/http/middlewares/scopeAuthMiddleware.ts#L163-L183
- https://github.com/1mcp-app/agent/blob/v0.39.0/src/transport/http/routes/inspectHelpers.ts#L79-L102
- https://github.com/1mcp-app/agent
- https://www.vulncheck.com/advisories/1mcp-agent-0.20.0-through-0.39.0-oauth-tag-scope-bypass-via-negated-tag-filter
Current operational correlations are not mixed into this historical source record. Open latest evidence to discover current connections.