CVE-2026-119130 Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 HTTP Request Target Smuggling
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-119130?
CVE-2026-119130 is a low-severity vulnerability in bytecodealliance wasmtime, published on 29 Oct 2026.
Official description
Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 does not verify that set-path-with-query values in wasmtime-wasi-http are paths, so absolute-form URLs are written verbatim as the HTTP/1.1 request target while the connection uses the allowed authority. A malicious guest can supply an absolute URL that a forward proxy or gateway at that authority honors, reaching hosts disallowed by embedder filtering policies.
Weakness: CWE-20
Which versions are affected by CVE-2026-119130?
1 open source package ship an affected version, including wasmtime-wasi-http.
| Package | Affected | Fixed in |
|---|---|---|
wasmtime-wasi-http crates.io | From 0.0.0-0 | 36.0.18, 48.0.6, 49.0.3 |
How do I fix CVE-2026-119130?
Upgrade wasmtime-wasi-http to a fixed version for your release line: 36.0.18, 48.0.6 or 49.0.3.
Is CVE-2026-119130 being exploited?
There is no known exploitation of CVE-2026-119130 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-119130, GHSA-5qpp-g3j2-8frx, GHSA-pr9x-c379-2x4g, RUSTSEC-2026-0350.