Description
Netty is a network application framework for development of protocol servers and clients. Starting in version 4.2.0.Final and prior to version 4.2.15.Final, a memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OOM error. Version 4.2.15.Final patches the issue.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
netty netty
>= 4.2.0.Final, < 4.2.15.Finalaffected
References
- https://github.com/netty/netty/security/advisories/GHSA-4grm-h2qv-h6w6 ↗
- https://github.com/netty/netty/commit/75127cab731ee35068d1f0667bffa188bc332f5d ↗
- https://github.com/netty/netty/releases/tag/netty-4.2.15.Final ↗
- https://access.redhat.com/security/cve/CVE-2026-48748 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2488441 ↗
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48748.json ↗