CVE-2026-108859Published
mcp-go through 1.2.1 Denial of Service via Unbounded POST Body Buffering
Explicit identifiers and source references
These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.
CVE-2026-108859 · Microsoft / collected KEV context
cve-program · CVE-2026-108859
- https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/mark3labs-mcp-go-streamable-http-unbounded-body
- https://github.com/mark3labs/mcp-go/blob/90d247ed8d45cbb7d71d9a95e112789b78760443/server/streamable_http.go#L405-L411
- https://github.com/mark3labs/mcp-go
- https://www.vulncheck.com/advisories/mcp-go-through-1.2.1-denial-of-service-via-unbounded-post-body-buffering
Related operational evidence
Explicit CVE identifiersNo related operational record is retained in the current change model.