CVE-2026-119130

CVSS 2.6 (low) · published 2026-10-29

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

Source: NVD CVE-2026-119130

References

• https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-5qpp-g3j2-8frx
• https://www.vulncheck.com/advisories/wasmtime-before-36.0.18-37.0.0-before-48.0.6-and-49.0.0-before-49.0.3-http-request-target-smuggling

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