CVE-2026-33870
unknown
CVSS v3
—
CVSS v2
—
VIR risk
—
Description
Netty: HTTP Request Smuggling via Chunked Extension Quoted-String Parsing
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-33870
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-33870.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | affected | |
| debian | bullseye | affected | |
| debian | forky | affected | |
| debian | sid | affected | |
| debian | trixie | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Maven | io.netty:netty-codec-http | <4.1.132.Final | 4.1.132.Final |
| Maven | io.netty:netty-codec-http | >=4.2.0.Alpha1,<4.2.10.Final | 4.2.10.Final |
References
- https://github.com/netty/netty/security/advisories/GHSA-pwqr-wmgm-9rr8
- https://nvd.nist.gov/vuln/detail/CVE-2026-33870
- https://github.com/netty/netty
- https://w4ke.info/2025/06/18/funky-chunks.html
- https://w4ke.info/2025/10/29/funky-chunks-2.html
- https://www.rfc-editor.org/rfc/rfc9110
- https://www.suse.com/security/cve/CVE-2026-33870.html
- https://security-tracker.debian.org/tracker/CVE-2026-33870
Verify integrity in audit chain (admin only). AS-IS.