Known vulnerabilities in Red Hat build of Keycloak 26.4

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CVE list

CVE	Summary	Score	Published
CVE-2026-97848	Keycloak-services: keycloak-services: protocol mapper with jsontype=json bypasses token sanitization	6.5 Medium	Nov 6, 2026
CVE-2026-97367	Keycloak-services: keycloak-services: dcr azp and sid claim substitution allows account rest session takeover	6.4 Medium	Nov 6, 2026
CVE-2026-96547	Keycloak-services: keycloak-services: dcr registration-time claim-path gap allows forging realm_access.roles	6.5 Medium	Nov 6, 2026
CVE-2026-97847	Keycloak-services: keycloak-services: client manager can substitute sessionless token principal via hardcoded-claim mappers to obtain realm administrator authority	7.1 High	Nov 5, 2026
CVE-2026-96453	Org.keycloak/keycloak-admin-cli: keycloak-admin-cli: kcadm custom truststore accepts arbitrary self-signed certificates	8.0 High	Nov 5, 2026
CVE-2026-93998	Keycloak-core: keycloak-core: saml adapter does not bind signed assertions to the configured identity provider issuer	7.4 High	Nov 5, 2026
CVE-2026-92857	Keycloak-services: keycloak-services: dcr protocol mapper config not validated, allowing iat holders to forge sub and aud claims in signed tokens	8.1 High	Nov 5, 2026
CVE-2026-92855	Keycloak-services: keycloak-services: saml broker accepts holder-of-key assertions without proof of key possession	7.4 High	Nov 5, 2026
CVE-2026-82965	Keycloak-services: keycloak-services: unauthenticated denial of service via saml soap endpoint unbounded xml parsing	7.5 High	Nov 5, 2026
CVE-2026-114232	Keycloak-services: keycloak-services: uma protection api resourcetype field not validated — cross-owner resource access	8.1 High	Nov 5, 2026
CVE-2026-110931	Keycloak-services: keycloak-services: unauthenticated jvm termination via saml 1.1 authoritybinding parsing loop	7.5 High	Nov 5, 2026
CVE-2026-107602	Keycloak-services: keycloak-services: unauthenticated cpu exhaustion via saml 1.1 keyinfo infinite loop	7.5 High	Nov 5, 2026
CVE-2026-103112	Keycloak-services: keycloak-services: account takeover via authentication race using reset-credentials path	7.5 High	Nov 5, 2026
CVE-2026-93562	Io.netty/netty-codec-http: netty: incomplete validation of malformed transfer-encoding allows http request smuggling	6.5 Medium	Sep 18, 2026
CVE-2026-93574	Io.netty/netty-codec-http: netty: http request smuggling via post-digit whitespace in chunk-size parsing	6.5 Medium	Sep 18, 2026
CVE-2026-93579	Io.netty/netty-codec-http2: netty: http/2 header field values are not validated by default (cr/lf/nul passthrough)	6.5 Medium	Sep 18, 2026
CVE-2026-93573	Io.netty/netty-codec-http: netty split transfer-encoding fields bypass final-chunked validation and enable request smuggling	6.5 Medium	Sep 18, 2026
CVE-2026-93568	Io.netty/netty-codec-http2: io.netty/netty-codec-http3: netty: http/2 and http/3 extended connect requests are downgraded as regular connect requests	7.5 High	Sep 18, 2026
CVE-2026-93569	Io.netty/netty-codec-http2: http/1 absolute-form host mismatch is translated to http/2 :authority, overriding the request-target authority	8.2 High	Sep 18, 2026
CVE-2026-93567	Io.netty/netty-codec-http2: http/1 authority-form connect is translated to malformed http/2 connect with host-controlled :authority	7.5 High	Sep 18, 2026
CVE-2026-93566	Io.netty/netty-codec-http: netty: http request smuggling due to control characters in the chunk-size line	6.5 Medium	Sep 18, 2026
CVE-2026-93565	Io.netty/netty-codec-http: netty rtspdecoder method-token smuggling via trailing control byte	7.5 High	Sep 18, 2026
CVE-2026-93564	Io.netty/netty-codec-haproxy: netty: haproxy proxy-v2 nested-tlv grandchild bytebuf reference-count leak (incomplete fix of pr #16881)	7.5 High	Sep 18, 2026
CVE-2026-93558	Io.netty/netty-codec-http: netty: unbounded per-connection queue growth in websocketserverextensionhandler leads to denial of service	7.5 High	Sep 18, 2026
CVE-2026-93492	Io.netty/netty-codec-http2: netty: http/2 hpackencoder dos with large table size	5.3 Medium	Sep 18, 2026

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