Fixed packages 10
| Release | Package | Fixed in |
|---|---|---|
| Red Hat · Hardened Images 1 hummingbird:1 | tomcat11 | 1:11.0.26-0.1.hum1 |
| Red Hat · Hardened Images 1 hummingbird:1 | tomcat11-admin-webapps | 1:11.0.26-0.1.hum1 |
| Red Hat · Hardened Images 1 hummingbird:1 | tomcat11-common | 1:11.0.26-0.1.hum1 |
| Red Hat · Hardened Images 1 hummingbird:1 | tomcat11-docs-webapp | 1:11.0.26-0.1.hum1 |
| Red Hat · Hardened Images 1 hummingbird:1 | tomcat11-el-6.0-api | 1:11.0.26-0.1.hum1 |
| Red Hat · Hardened Images 1 hummingbird:1 | tomcat11-jsp-4.0-api | 1:11.0.26-0.1.hum1 |
| Red Hat · Hardened Images 1 hummingbird:1 | tomcat11-lib | 1:11.0.26-0.1.hum1 |
| Red Hat · Hardened Images 1 hummingbird:1 | tomcat11-servlet-6.1-api | 1:11.0.26-0.1.hum1 |
| Red Hat · Hardened Images 1 hummingbird:1 | tomcat11-user-instance | 1:11.0.26-0.1.hum1 |
| Red Hat · Hardened Images 1 hummingbird:1 | tomcat11-webapps | 1:11.0.26-0.1.hum1 |
Vulnerabilities 14
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Critical 9.8CVE-2026-76183 Public exploit
Apache Tomcat: Bypass of security constraints for WebSocket endpoints
Authentication Bypass by Alternate Name vulnerability in Apache Tomcat allowed the security constraints for any WebSocket endpoint to be bypassed. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 …
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Critical 9.8
Apache Tomcat: Fix for CVE-2026-34500 was incomplete. OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled
CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.25, from 10.1.22 through 10.1.59, from 9.0.92 through 9.0.121. Us…
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Critical 9.1CVE-2026-86350 Public exploit
Apache Tomcat: Regression in fix for CVE-2026-41293 can trigger request header mix-up
Inconsistent interpretation of HTTP/2 requests ('HTTP Request/Response smuggling') vulnerability in Apache Tomcat caused by a regression in fix for CVE-2026-41293 can trigger request header mix-up. This issue affects Apache Tomcat: from 11.0.22 through 11.0.2…
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High 8.1
Apache Tomcat: Principal lookup can fail open in some cases
Improper Authentication vulnerability in Apache Tomcat meant that in some circumstances (e.g. CLIENT-CERT, SPNEGO) that a user would be authenticated even if the user did not exist in the DataSourceRealm. This issue affects Apache Tomcat: from 11.0.0-M1 throu…
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High 8.1
Apache Tomcat: Stale HPACK emitter injects trailers into recycled pooled Request
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat allows an attacker to inject trailer fields into another HTTP/2 request. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.2…
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High 7.5
Apache Tomcat: Unbounded read in WebDAV LOCK and PROPFIND handling
Allocation of Resources Without Limits or Throttling vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117. Older, unsupported versions may also be affec…
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High 7.5
Apache Tomcat: DoS via busy wait during WebSocket close
Uncontrolled Resource Consumption vulnerability in Apache Tomcat during sending of WebSocket close message enabled a DoS attack. This issue affects Apache Tomcat: from 11.0.0-M5 through 11.0.25, from 10.1.8 through 10.1.59, from 9.0.74 through 9.0.121. The fo…
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High 7.5
Apache Tomcat: AJP DoS via missing request body
Allocation of resources without limits or throttling vulnerability in Apache Tomcat allows an unauthenticated AJP request to pin an AJP processing thread leading to denial of service. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1…
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High 7.5
Apache Tomcat: WebSocket DoS due to lost asynchronous write timeout
Missing release of resource after effective lifetime, Comparison using wrong factors vulnerability in Apache Tomcat allows a denial of service as a result of lost time outs for asynchronous WebSocket writes. This issue affects Apache Tomcat: from 11.0.0-M1 th…
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High 7.5
Apache Tomcat: WebSocket message smuggling with per-message-deflate
Improper handling of length parameter inconsistency vulnerability in Apache Tomcat allows WebSocket message smuggling when per-message-deflate is used. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.…
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High 7.3
Apache Tomcat: Cross-context authentication mix-up with Jakarta Authentication configured
Improper Authentication vulnerability in Apache Tomcat. When Jakarta Authentication was configured with SimpleAuthConfigProvider as the default provider and multiple web application used that provider, the realm for the first web application to authenticate a…
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High 7.3
Apache Tomcat: HTTP/2 DoS via malformed request
Incomplete cleanup vulnerability in Apache Tomcat allows a malformed request to potentially (depends on timing) cause one request from another user to fail. This issue affects Apache Tomcat: from 11.0.19 through 11.0.25, from 10.1.53 through 10.1.59, from 9.0…
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Medium 6.5
Apache Tomcat: OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore
Improper Check for Certificate Revocation vulnerability in Apache Tomcat. Both the OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 throu…
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Low 3.7
Apache Tomcat: Transfer-Encoding honored for HTTP/1.0 requests
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat caused by processing the transfer-encoding header for an HTTP/1.0 request may allow an attacker to cause one request from another user to fail when…
References
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article
https://images.redhat.com/
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report
https://access.redhat.com/security/cve/CVE-2026-68569
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article
https://access.redhat.com/security/updates/classification/
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report
https://access.redhat.com/security/cve/CVE-2026-41284
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report
https://access.redhat.com/security/cve/CVE-2026-79677
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report
https://access.redhat.com/security/cve/CVE-2026-76183
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report
https://access.redhat.com/security/cve/CVE-2026-78437
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report
https://access.redhat.com/security/cve/CVE-2026-86350
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report
https://access.redhat.com/security/cve/CVE-2026-87022
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report
https://access.redhat.com/security/cve/CVE-2026-78383
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report
https://access.redhat.com/security/cve/CVE-2026-77791
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report
https://access.redhat.com/security/cve/CVE-2026-73581
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report
https://access.redhat.com/security/cve/CVE-2026-75973
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report
https://access.redhat.com/security/cve/CVE-2026-77756
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report
https://access.redhat.com/security/cve/CVE-2026-86248
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report
https://access.redhat.com/security/cve/CVE-2026-77762
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advisory
https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_68258.json
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2476518
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advisory
https://www.cve.org/CVERecord?id=CVE-2026-41284
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advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-41284
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article
https://lists.apache.org/thread/2nvqjr7ovjmvx2vbhb7s61ycd5msc8qc
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2524160
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advisory
https://www.cve.org/CVERecord?id=CVE-2026-68569
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advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-68569
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article
https://lists.apache.org/thread/8robqo76q0osxgw0b5lcwgz0hcf9h4zc
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2539356
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advisory
https://www.cve.org/CVERecord?id=CVE-2026-73581
-
advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-73581
-
article
https://lists.apache.org/thread/r0dj3h1pbn4wv96fhsfrnz3t6874t6do
-
report
https://bugzilla.redhat.com/show_bug.cgi?id=2539354
-
advisory
https://www.cve.org/CVERecord?id=CVE-2026-75973
-
advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-75973
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article
https://lists.apache.org/thread/njjcdkkzqyzx4n3ffc4ffjmyh5mpl1gr
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2539355
-
advisory
https://www.cve.org/CVERecord?id=CVE-2026-76183
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advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-76183
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article
https://lists.apache.org/thread/45mxk8nj2q8pkhct6lfxkvtm2jpywrsp
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2539351
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advisory
https://www.cve.org/CVERecord?id=CVE-2026-77756