# wasmtime-wasi-http (crates.io) vulnerabilities

8 known vulnerabilities (6 medium, 1 low), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://crates.io/crates/wasmtime-wasi-http

## Advisories (8)

### [CVE-2026-121441](https://cve.now/CVE-2026-121441): Wasmtime before 36.0.19, 37.0.0 before 48.0.7, and 49.0.0 before 49.0.4 wasi-http Request Smuggling

- Severity: Medium 6.3
- Published: Nov 3, 2026
- Affected: fixed in 36.0.19; from 37.0.0, fixed in 48.0.7; from 49.0.0, fixed in 49.0.4.

### [CVE-2026-121440](https://cve.now/CVE-2026-121440): Wasmtime 46.0.0 before 48.0.7 and 49.0.0 before 49.0.4 Forwarded Trailers Header Filter Bypass

- Severity: Medium 6.3
- Published: Nov 3, 2026
- Affected: from 46.0.0, fixed in 48.0.7; from 49.0.0, fixed in 49.0.4.

### [CVE-2026-121439](https://cve.now/CVE-2026-121439): Wasmtime 46.0.0 before 48.0.7 and 49.0.0 before 49.0.4 HTTP Response Splitting via wasi-http

- Severity: Medium 6.9
- Published: Nov 3, 2026
- Affected: from 46.0.0, fixed in 48.0.7; from 49.0.0, fixed in 49.0.4.

### [CVE-2026-119131](https://cve.now/CVE-2026-119131): Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 Host Panic via wasi-http

- Severity: Medium 6.9
- Published: Oct 29, 2026
- Affected: from 46.0.0, fixed in 48.0.6; from 49.0.0, fixed in 49.0.3.

### [CVE-2026-119130](https://cve.now/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

- Severity: Low 2.1
- Published: Oct 29, 2026
- Affected: fixed in 36.0.18; from 37.0.0, fixed in 48.0.6; from 49.0.0, fixed in 49.0.3.

### [RUSTSEC-2026-0421](https://cve.now/RUSTSEC-2026-0421): wasi-http p2: outgoing content-length can be invalid or not match body

- Severity: Unrated
- Published: Oct 29, 2026
- Affected: fixed in 36.0.20; from 37.0.0, fixed in 48.0.8; from 49.0.0, fixed in 49.0.5; from 50.0.0, fixed in 50.0.1.

### [CVE-2026-115388](https://cve.now/CVE-2026-115388): Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 Memory Exhaustion DoS via wasmtime-wasi-http Outgoing Body Write

- Severity: Medium 6.9
- Published: Oct 22, 2026
- Affected: fixed in 36.0.16; from 37.0.0, fixed in 48.0.3; from 49.0.0, fixed in 49.0.1.

### [CVE-2026-115382](https://cve.now/CVE-2026-115382): Wasmtime 46.0.0 before 48.0.4 and 49.0.0 before 49.0.2 wasi:http Zero Timeout Panic DoS

- Severity: Medium 5.9
- Published: Oct 22, 2026
- Affected: from 46.0.0, fixed in 48.0.4; from 49.0.0, fixed in 49.0.2.

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