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CVE-2026-93492Io.netty/netty-codec-http2: netty: http/2 hpackencoder dos with large table size

Red Hat Red Hat Build of Debezium 3.6; Red Hat Red Hat build of Keycloak 26.4; Red Hat Red Hat build of Keycloak 26.4.17; Red Hat Red Hat build of Keycloak 26.6 Veröffentlicht: (vor 1 Monat)

Beschreibung

A flaw was found in Netty's HTTP/2 HpackEncoder. A remote attacker can exploit this by sending HTTP/2 SETTINGS frames with a very large MAX_HEADER_TABLE_SIZE. This causes the HpackEncoder to store an excessive number of unique headers, leading to increased CPU usage and memory consumption, ultimately resulting in a Denial of Service (DoS).

Schwachstellentyp (CWE): CWE-1035

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

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