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OpenAdvisories
High WID-SEC-2026-3007 10 CVEs

Apache Tomcat: Mehrere Schwachstellen

Published Aug 25, 2026 · Updated Nov 12, 2026 · Revision 15 · de

Vendor: Apache Vendor: Debian Vendor: IBM Vendor: Oracle Vendor: Red Hat Vendor: RESF Vendor: SUSE Product: Enterprise Linux Product: Integration Bus Product: Linux Product: Linux Product: Linux Product: openSUSE Product: Rocky Linux Product: Tomcat Platform: Windows

Summary

Ein Angreifer kann mehrere Schwachstellen in Apache Tomcat ausnutzen, um Sicherheitsmaßnahmen zu umgehen, Berechtigungen zu erweitern, Daten zu manipulieren oder offenzulegen oder Denial-of-Service-Zustände zu verursachen.

Product

Apache Tomcat ist ein Web-Applikationsserver für verschiedene Plattformen.

Vulnerabilities 10

  • Critical 9.8
    CVE-2026-65637

    Apache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - CVE-2026-32990 fix incomplete

    Improper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990. This issue affects Apache Tomcat: from 11.0.20 through 11.0.24, from 10.1.53 through 10.1.57, from 9.0.115 through 9.0.120. Users are recommended to upgrade to …

    Apache Software Foundation Apache Tomcat tomcat8 tomcat9 Debian Ubuntu Maven
  • Critical 9.8
    CVE-2026-65905

    Apache Tomcat: Limited replay attack possible with DIGEST authentication

    Authentication Bypass by Capture-replay vulnerability in Apache Tomcat's DIGEST authenticator. If, before windowSize requests have been made, a client makes a DIGEST authenticated request with a nonceCount on the upper boundary of the replay window then that …

    Apache Software Foundation Apache Tomcat thingsboard-tb-node thingsboard-tb-mqtt-transport Debian Ubuntu Wolfi Maven
  • Critical 9.1
    CVE-2026-65182

    Apache Tomcat: Bypass longest prefix security constraint

    Improper Access Control, Incorrect Authorization vulnerability in Apache Tomcat leads to security constraint bypass if a constraint for a longer path is specified before a more restrictive constraint for a shorter sub-path. This issue affects Apache Tomcat: f…

    Apache Software Foundation Apache Tomcat thingsboard-tb-node thingsboard-tb-mqtt-transport Debian Ubuntu Wolfi Maven
  • Critical 9.1
    CVE-2026-68525

    Apache Tomcat: Redirect after FORM auth may bypass method specific constraints

    Incorrect Authorization vulnerability in Apache Tomcat's FORM authentication process allows the bypassing of a security constraint that limits user has access to a resource POST but not GET. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, fr…

    Apache Software Foundation Apache Tomcat thingsboard-tb-node thingsboard-tb-mqtt-transport Debian Ubuntu Wolfi Maven
  • High 8.1
    CVE-2026-65183

    Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets

    Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Apache Tomcat when creating unix domain sockets allows an unauthorised local user to access the unix domain socket. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.…

    Apache Software Foundation Apache Tomcat tomcat8 tomcat9 Debian Ubuntu
  • High 8.1
    CVE-2026-66422

    Apache Tomcat: Servlet role references can bypass declarative role constraints

    Improper Authorization vulnerability in Apache Tomcat cause by security-role-ref definitions being incorrectly used as role aliases within the Realm in additional to the correct usage with Request.isUserInRole(). This issue affects Apache Tomcat: from 11.0.0-…

    Apache Software Foundation Apache Tomcat tomcat9 tomcat8 Debian Ubuntu
  • High 8.1
    CVE-2026-68569

    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…

    Apache Software Foundation Apache Tomcat tomcat8 tomcat9 Debian Ubuntu
  • High 7.5
    CVE-2026-65927

    Apache Tomcat: RewriteValve [N] restarts at the second rule and may bypass access control

    Off-by-one Error vulnerability in Apache Tomcat impacting the [N] flag on the rewrite valves causes rewrite processing to restart at the second rule rather than the first rule. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 t…

    Apache Software Foundation Apache Tomcat tomcat8 tomcat9 Debian Ubuntu
  • High 7.5
    CVE-2026-68763

    Apache Tomcat: DoS via allocation leak in HTTP/2 backlog tracking when a stream is reset

    Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through…

    Apache Software Foundation Apache Tomcat tomcat8 tomcat9 Debian Ubuntu
  • Medium 6.8
    CVE-2026-73180

    Apache Tomcat: Authenticated WebSocket session survives end of HTTP session

    Insufficient Session Expiration vulnerability in Apache Tomcat meant that if the session ID for an authenticated HTTP session was changed after a WebSocket connection had been established under that authenticated HTTP session, the WebSokcet session would not …

    Apache Software Foundation Apache Tomcat tomcat8 tomcat9 Debian Ubuntu

Revision history

  1. #15

    Neue Updates von Debian aufgenommen

  2. #14

    Neue Updates von Red Hat aufgenommen

  3. #13

    Neue Updates von Debian aufgenommen

  4. #12

    Neue Updates von IBM aufgenommen

  5. #11

    Neue Updates von Oracle Linux aufgenommen

  6. #10

    Neue Updates von Red Hat, Oracle Linux und Rocky Enterprise Software Foundation aufgenommen

  7. #9

    Neue Updates von Red Hat aufgenommen

  8. #8

    Neue Updates von Red Hat aufgenommen

  9. #7

    Neue Updates von Red Hat aufgenommen

  10. #6

    Tippfehler korrigiert

  11. #5

    Neue Updates von SUSE aufgenommen

  12. #4

    Neue Updates von openSUSE und SUSE aufgenommen

  13. #3

    Neue Updates von SUSE aufgenommen

  14. #2

    Neue Updates von Red Hat aufgenommen

  15. #1

    Initiale Fassung

References