RH
Product
Red Hat Build of Keycloak
by Red Hat · last CVE Oct 21, 2026
90
CVEs
0
On KEV
9.8
Max CVSS
11
New 30D
Severity mix
Critical 3High 30Medium 50Low 7
Watch

Add Red Hat Build of Keycloak to your stack to get only the CVEs that touch what you run.

CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-42581
9.8
1%
May 13
Netty: HTTP/1.0 TE+CL Coexistence Bypasses Smuggling Sanitization
Affected: All versions, or not specified
CVE-2026-42584
9.1
1%
May 13
Netty: HttpClientCodec response desynchronization
Affected: All versions, or not specified
CVE-2026-42579
9.1
1%
May 13
Netty: DNS Codec Input Validation Bypass in Netty (Encoder + Decoder)
Affected: All versions, or not specified
CVE-2026-93569
8.2
2%
Sep 18
Io.netty/netty-codec-http2: http/1 absolute-form host mismatch is translated to http/2 :authority, overriding the request-target authority
Affected: All versions, or not specified
CVE-2026-18967
8.1
0%
Aug 6
Keycloak-services: keycloak-services: saml onetimeuse assertion replay in idp-initiated broker flow
Affected: All versions, or not specified
CVE-2026-11800
8.1
0%
Jun 25
Org.keycloak:keycloak-services: keycloak: authentication bypass via jwt algorithm confusion
Affected: All versions, or not specified
CVE-2026-44249
8.1
1%
Jun 11
Netty has an IPv6 Subnet Filter Bypass via Incorrect Comparator Masking
Affected: All versions, or not specified
CVE-2026-28291
8.1
1%
Apr 13
simple-git has Command Execution via Option-Parsing Bypass
Affected: All versions, or not specified
CVE-2024-3656
8.1
3%
Oct 9
Keycloak: unguarded admin rest api endpoints allows low privilege users to use administrative functionalities
Affected: All versions, or not specified
CVE-2026-93568
7.5
1%
Sep 18
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
Affected: All versions, or not specified
CVE-2026-93567
7.5
3%
Sep 18
Io.netty/netty-codec-http2: http/1 authority-form connect is translated to malformed http/2 connect with host-controlled :authority
Affected: All versions, or not specified
CVE-2026-93565
7.5
1%
Sep 18
Io.netty/netty-codec-http: netty rtspdecoder method-token smuggling via trailing control byte
Affected: All versions, or not specified
CVE-2026-93564
7.5
1%
Sep 18
Io.netty/netty-codec-haproxy: netty: haproxy proxy-v2 nested-tlv grandchild bytebuf reference-count leak (incomplete fix of pr #16881)
Affected: All versions, or not specified
CVE-2026-93558
7.5
1%
Sep 18
Io.netty/netty-codec-http: netty: unbounded per-connection queue growth in websocketserverextensionhandler leads to denial of service
Affected: All versions, or not specified
CVE-2026-93491
7.5
1%
Sep 18
Io.netty/netty-codec-http: netty: denial of service via unbounded httpservercodec http/1.1 pipeline queue
Affected: All versions, or not specified
CVE-2026-93488
7.5
1%
Sep 18
Io.netty/netty-codec-http: netty: denial of service via unbounded concurrent spdy streams
Affected: All versions, or not specified
CVE-2026-87743
7.5
1%
Sep 18
Quarkus-vertx-http: authorization bypass via path normalization discrepancy in quarkus http security
Affected: All versions, or not specified
CVE-2026-89059
7.5
1%
Sep 18
Resteasy-core: resteasy: iioimageprovider unbounded image decode (decompression-bomb dos)
Affected: All versions, or not specified
CVE-2026-50010
7.5
0%
Jun 12
Netty's wrapping plain trust manager silently disables hostname verification
Affected: All versions, or not specified
CVE-2026-48059
7.5
1%
Jun 12
Netty HAProxy: Unbalanced Reference Count in Nested PP2_TYPE_SSL TLV Parsing Leads to Memory Exhaustion
Affected: All versions, or not specified
CVE-2026-48043
7.5
1%
Jun 12
netty-codec-http2: ByteBuf Reference-Count Leak in DelegatingDecompressorFrameListener Leads to Memory Exhaustion
Affected: All versions, or not specified
CVE-2026-45416
7.5
1%
Jun 12
Netty: SNI handler pre-allocates up to 16 MiB from nine attacker bytes
Affected: All versions, or not specified
CVE-2026-44893
7.5
1%
Jun 12
Netty: HAProxy SSL TLV parsing leaks retained slice on invalid TLV length
Affected: All versions, or not specified
CVE-2026-40983
7.5
1%
Jun 9
Micrometer gRPC server instrumentation DoS vulnerability
Affected: All versions, or not specified
CVE-2026-42587
7.5
1%
May 13
Netty: HttpContentDecompressor maxAllocation bypass via Content-Encoding: br/zstd/snappy enables decompression bomb DoS
Affected: All versions, or not specified
CVE-2026-42578
7.5
1%
May 13
Netty: HTTP Header Injection via HttpProxyHandler Disabled Validation
Affected: All versions, or not specified
CVE-2025-14813
7.5
0%
Apr 15
GOSTCTR implementation unable to process more than 255 blocks correctly
Affected: All versions, or not specified
CVE-2024-3884
7.5
1%
Dec 3
Undertow: outofmemory when parsing form data encoding with application/x-www-form-urlencoded
Affected: All versions, or not specified
CVE-2024-7885
7.5
3%
Aug 21
Undertow: improper state management in proxy protocol parsing causes information leakage
Affected: All versions, or not specified
CVE-2026-89058
7.4
0%
Sep 18
Resteasy-core: resteasy: corsfilter reflects arbitrary origin with credentials under wildcard config
Affected: All versions, or not specified
CVE-2026-19611
7.4
1%
Aug 20
Wildfly-elytron: org.wildfly.security/wildfly-elytron-password-impl: wildfly-elytron: password keyspace reduction via nfkc fullwidth folding
Affected: All versions, or not specified
CVE-2024-12397
7.4
1%
Dec 12
Io.quarkus.http/quarkus-http-core: quarkus http cookie smuggling
Affected: All versions, or not specified
CVE-2024-2700
7.0
0%
Apr 4
Quarkus-core: leak of local configuration properties into quarkus applications
Affected: All versions, or not specified
CVE-2026-109082
6.8
0%
Oct 12
Keycloak-services: keycloak-services: ciba confidential-only contract not enforced for public clients
Affected: All versions, or not specified
CVE-2026-97846
6.8
0%
Sep 25
Keycloak-services: keycloak-services: standard token exchange v2 bypasses mtls holder-of-key binding
Affected: All versions, or not specified
CVE-2026-96445
6.8
0%
Sep 23
Keycloak-services: keycloak-services: conditional otp skip-header policy evaluated against untrusted proxy headers
Affected: All versions, or not specified
CVE-2026-95503
6.8
0%
Sep 22
Keycloak-services: keycloak-services: potential kdc spoofing bypass when kerberos password authentication is enabled
Affected: All versions, or not specified
CVE-2026-96448
6.6
0%
Sep 25
Keycloak-services: keycloak-services: fgap v2 composite-blind role mapping allows privilege escalation
Affected: All versions, or not specified
CVE-2026-97177
6.6
0%
Sep 24
Keycloak-services: keycloak-services: generic user update bypasses denied reset-password permission
Affected: All versions, or not specified
CVE-2026-94000
6.6
0%
Sep 19
Keycloak-services: keycloak-services: delegated admin with manage-users can escalate to realm-admin via group membership
Affected: All versions, or not specified
CVE-2026-107121
6.5
0%
Oct 7
Keycloak-services: keycloak-services: smtp starttls plaintext credential and message downgrade
Affected: All versions, or not specified
CVE-2026-105306
6.5
0%
Oct 5
Keycloak-services: keycloak-services: token introspection audience bypass via dynamic client registration
Affected: All versions, or not specified
CVE-2026-103884
6.5
0%
Oct 1
Keycloak-services: keycloak-services: path traversal in x.509 crl distribution point allows arbitrary local file read
Affected: All versions, or not specified
CVE-2026-94001
6.5
0%
Sep 19
Keycloak-services: keycloak-services: admin credential delete bypasses denied reset-password permission
Affected: All versions, or not specified
CVE-2026-93562
6.5
0%
Sep 18
Io.netty/netty-codec-http: netty: incomplete validation of malformed transfer-encoding allows http request smuggling
Affected: All versions, or not specified
CVE-2026-93574
6.5
1%
Sep 18
Io.netty/netty-codec-http: netty: http request smuggling via post-digit whitespace in chunk-size parsing
Affected: All versions, or not specified
CVE-2026-93579
6.5
1%
Sep 18
Io.netty/netty-codec-http2: netty: http/2 header field values are not validated by default (cr/lf/nul passthrough)
Affected: All versions, or not specified
CVE-2026-93573
6.5
1%
Sep 18
Io.netty/netty-codec-http: netty split transfer-encoding fields bypass final-chunked validation and enable request smuggling
Affected: All versions, or not specified
CVE-2026-93566
6.5
0%
Sep 18
Io.netty/netty-codec-http: netty: http request smuggling due to control characters in the chunk-size line
Affected: All versions, or not specified
CVE-2026-88770
6.5
0%
Sep 10
Keycloak-services: keycloak-services: device authorization grant issues tokens to brute-force-locked accounts
Affected: All versions, or not specified
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