CVE-2026-48748
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.
Weakness
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
- netty netty
References
- https://github.com/netty/netty/commit/75127cab731ee35068d1f0667bffa188bc332f5d
- https://github.com/netty/netty/releases/tag/netty-4.2.15.Final
- https://github.com/netty/netty/security/advisories/GHSA-4grm-h2qv-h6w6
- 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
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