CVE-2026-100656 Details
Description
Rejected reason: This CVE ID has been rejected as a duplicate.
A denial-of-service vulnerability has been identified in Netty's HTTP server codec (io.netty:netty-codec-http) versions 4.2.0.Final through 4.2.17.Final and all releases up to and including 4.1.137.Final. The flaw arises from unbounded per-connection queue growth, where the codec tracks the HTTP methods of pipelined requests that have not yet been answered. While the first 32 requests are efficiently managed, any additional ones are added to a methodOverflowQueue, an ArrayDeque with no size limit. This vulnerability can be exploited by a remote, unauthenticated attacker who sends pipelined HTTP/1.1 requests over a single connection and deliberately avoids reading responses, leading to unbounded heap growth and a denial-of-service condition.
Users can upgrade to Netty versions 4.2.18.Final or 4.1.138.Final, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No CVSS 3.x data is available for this CVE.
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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No references are available for this CVE.
Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
No affected product data is available for this CVE.
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 28, 2026 | CVE Rejected | [email protected] |
| Sep 28, 2026 | CVE Modified | [email protected] |
| Sep 28, 2026 | CVE Modified | CISA-ADP |
| Sep 27, 2026 | CVE Modified | [email protected] |
| Sep 26, 2026 | New CVE Received | [email protected] |