CVE-2026-59900
1 advisory.
Maven/io.netty:netty-codec-http2 CVE-2026-59900: medium
Netty: [codec-http2] Lack of Host Header Deduplication in HTTP/2→HTTP/1.x Translation Leads to Request Routing Bypass
Action: Upgrade io.netty:netty-codec-http2 to 4.1.136.Final (4.1.x) or 4.2.16.Final (4.2.x) or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 4.2.0.Final | 4.2.16.Final | - |
| 0 | 4.1.136.Final | - |
Fixed versions
| 4.2.16.Final | 4.1.136.Final |
Sources
- osv: GHSA-c69g-56f8-xwqj
- https://github.com/netty/netty/security/advisories/GHSA-c69g-56f8-xwqj
- https://github.com/netty/netty
- https://github.com/netty/netty/releases/tag/netty-4.1.136.Final
- https://github.com/netty/netty/releases/tag/netty-4.2.16.Final
CVE-2026-59900 · published · modified · JSON