Io.netty/netty-codec-http: netty: denial of service via unbounded httpservercodec http/1.1 pipeline queue
Historical advisory recorded 6 Nov 2026 12:03:43 UTC. Read the latest advisory.
cve-program · CVE-2026-93491
PublishedA 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.
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cve-program · CVE-2026-93491
PublishedIo.netty/netty-codec-http: netty: denial of service via unbounded httpservercodec http/1.1 pipeline queue
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.
- Source published
- 18 Sep 2026 12:43:26 UTC
- Source modified
- 6 Nov 2026 10:23:24 UTC
- Saved here
- 6 Nov 2026 12:03:43 UTC
- Source terms
- CVE Program Terms of Use
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Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
CVSS 3.1 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H