High severity7.5NVD Advisory· Published Jun 12, 2026· Updated Jun 15, 2026
CVE-2026-48748
CVE-2026-48748
Description
Netty is a network application framework for development of protocol servers and clients. 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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
io.netty:netty-codec-http3Maven | >= 4.2.0.Final, < 4.2.15.Final | 4.2.15.Final |
Affected products
4- osv-coords2 versions
< 2.18.0-r6+ 1 more
- (no CPE)range: < 2.18.0-r6
- (no CPE)range: >= 4.2.0.Final, < 4.2.15.Final
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-4grm-h2qv-h6w6ghsaADVISORY
- github.com/netty/netty/security/advisories/GHSA-4grm-h2qv-h6w6nvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-48748ghsaADVISORY
- github.com/netty/netty/releases/tag/netty-4.2.15.FinalnvdRelease NotesWEB
News mentions
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