MinorCritical vulnerability

CVE-2026-93491 (CVSS 7.5)

NVD · officialPublished Sep 18, 2026Risk 23/100EPSS 0.4%

A flaw was found in Netty's HttpServerCodec. A remote, unauthenticated attacker can exploit this vulnerability by pipelining HTTP/1.1 requests on a single connection and withholding reads. This action causes the methodOverflowQueue to grow without limit, leading to unbounded heap memory consumption and a denial of service due to memory exhaustion.

Technical details

CVSS

7.5

AV:NetworkAC:LowPR:NoneUI:NoneC:NoneI:NoneA:High

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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