CVE-2026-126406

LOWCVSS 3.70% EPSS

The wasmtime-wasi-http p2 implementation in Wasmtime before 36.0.20, 37.0.0 before 48.0.8, 49.0.0 before 49.0.5, and 50.0.0 before 50.0.1 can send conflicting content-length headers, or ones not matching the body, in outgoing requests. A guest that reuses a received response's headers resource to send a bodyless request can enable request smuggling against non-compliant servers, potentially bypassing embedder destination access controls.

Published 2026-11-13 · last modified 2026-11-13

Full record at NVD ↗

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Ncerio by BeyondNets · data from NVD, CISA KEV, EPSS.