GHSA-h4wp-g4x3-7398
wasi-http p2: outgoing content-length can be invalid or not match body
This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-h4wp-g4x3-7398 For more information see the GitHub-hosted security advisory.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
What each source reports
OSV Score usedRUSTSEC-2026-0421
wasi-http p2: outgoing content-length can be invalid or not match body
This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-h4wp-g4x3-7398 For more information see the GitHub-hosted security advisory.
- Record
RUSTSEC-2026-0421- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
wasmtime-wasi-httpcrates.io | 0.0.0-0 up to 36.0.20, 37.0.0 up to 48.0.8, 49.0.0 up to 49.0.5, 50.0.0 up to 50.0.1 | 36.0.2048.0.849.0.550.0.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
GHSA-h4wp-g4x3-7398 is a low vulnerability (CVSS 3.7) in wasmtime-wasi-http, published October 29, 2026. No source lists public exploit code. Fixed in wasmtime-wasi-http 36.0.20.