RUSTSEC-2026-0375

wasi-http p3: Guests can set incorrect content-length for spliced response bodies

Reported

October 19, 2026

Issued

October 20, 2026

Package

wasmtime-wasi-http (crates.io)

Type

Vulnerability

Aliases

GHSA-9prg-84vf-g5fc

References

https://github.com/bytecodealliance/wasmtime/pull/14822

CVSS Score

5.3 MEDIUM

CVSS Details

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality Impact: None
Integrity Impact: Low
Availability Impact: None

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Patched

>=48.0.7, <49.0.0
>=49.0.4

Unaffected

<46.0.0

Description

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-9prg-84vf-g5fc For more information see the GitHub-hosted security advisory.

Advisory available under CC0-1.0 license.