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6.5Mittel

CVE-2026-91920Undertow: undertow: chunkreader message length permits chunk-size overflow

Red Hat Red Hat build of Apache Camel for Spring Boot 4; Red Hat Red Hat Enterprise Linux 8; Red Hat Red Hat Enterprise Linux 9; Red Hat Red Hat Fuse 7 Veröffentlicht: (vor 11 Tagen)

Beschreibung

A flaw was found in the ChunkReader component of the Undertow web server, which is used to handle chunked transfer encoding in HTTP requests. The issue occurs because a security check for the chunk size is performed before the value is shifted, allowing a specifically crafted 15-digit chunk size to bypass the limit and overflow into internal state flags. This can cause the server to terminate a request body prematurely and interpret the remaining data as a separate, smuggled request.

Schwachstellentyp (CWE): CWE-444

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

Betroffene Produkte und Versionen

HerstellerProduktVersionen
Red Hat Red Hat build of Apache Camel for Spring Boot 4 all versions
Red Hat Red Hat Enterprise Linux 8 —
Red Hat Red Hat Enterprise Linux 9 —
Red Hat Red Hat Fuse 7 —
Red Hat Red Hat JBoss Enterprise Application Platform 7 all versions
Red Hat Red Hat JBoss Enterprise Application Platform 8 all versions
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack —
Red Hat Red Hat Single Sign-On 7 all versions

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