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Sicherheitslücken in tomcat9

In den letzten 30 Tagen veröffentlichte Sicherheitslücken für tomcat9: 0. Davon im KEV-Katalog: 0.

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Sicherheitslücken: 14

  1. CVE-2026-43515

    Kritisch · CVSS 9.1EPSS 1,22%Korrektur verfügbar

    Apache Tomcat: Security constraints not correctly applied

    Improper Authorization vulnerability when multiple method constraints define an HTTP method for the same extension 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, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.

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  2. CVE-2026-43513

    Hoch · CVSS 7.5EPSS 0,5%Korrektur verfügbar

    Apache Tomcat: LockOutRealm treats user names as case-sensitive

    Improper Handling of Case Sensitivity vulnerability in LockOutRealm 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, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Older unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.

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  3. CVE-2026-43512

    Kritisch · CVSS 9.8EPSS 1,33%Korrektur verfügbar

    Apache Tomcat: Digest authenticator will authenticate any unknown user

    DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication 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, from 8.5.0 through 8.5.100, from before 7.0.0. Older unsupported versions any also be affect Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.

    • Auf 9.0.70-2ubuntu0.1+esm3 aktualisieren
    Veröffentlicht Aktualisiert
  4. CVE-2026-41293

    Kritisch · CVSS 9.8EPSS 1,7%Korrektur verfügbar

    Apache Tomcat: HTTP/2 request headers not validated

    Improper Input Validation 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, from 10.0.0-M1 through 10.0.27. Older, end of support versions may also be affected. Users are recommended to upgrade to version [FIXED_VERSION], which fixes the issue.

    • Auf 9.0.70-2ubuntu0.1+esm3 aktualisieren
    Veröffentlicht Aktualisiert
  5. CVE-2026-42498

    Hoch · CVSS 7.3EPSS 0,65%Korrektur verfügbar

    Apache Tomcat: WebSocket authentication header exposure

    Exposure of HTTP Authentication Header to unexpected hosts during WebSocket authentication 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 9.0.2 through 9.0.117, from 8.5.24 through 8.5.100, from 7.0.83 through 7.0.109. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118, which fix the issue.

    • Auf 9.0.70-2ubuntu0.1+esm3 aktualisieren
    Veröffentlicht Aktualisiert
  6. CVE-2026-41284

    Hoch · CVSS 7.5EPSS 0,84%Korrektur verfügbar

    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 affected. Users are recommended to upgrade to version [FIXED_VERSION], which fixes the issue.

    • Auf 9.0.70-2ubuntu0.1+esm3 aktualisieren
    Veröffentlicht Aktualisiert
  7. CVE-2025-24813

    Kritisch · CVSS 10EPSS 99,94%Im KEV-KatalogÖffentlicher ExploitKorrektur verfügbar

    Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT

    Path Equivalence: 'file.Name' (Internal Dot) leading to Remote Code Execution and/or Information disclosure and/or malicious content added to uploaded files via write enabled Default Servlet in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.2, from 10.1.0-M1 through 10.1.34, from 9.0.0.M1 through 9.0.98. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 though 8.5.100. Other, older, EOL versions may also be affected. If all of the following were true, a malicious user was able to view security sensitive files and/or inject content into those files: - wr

    • Auf 9.0.70-2ubuntu0.1+esm1 aktualisieren
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  8. CVE-2024-38286

    Hoch · CVSS 8.6EPSS 1,69%Korrektur verfügbar

    Apache Tomcat: Denial of Service

    Allocation of Resources Without Limits or Throttling vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M20, from 10.1.0-M1 through 10.1.24, from 9.0.13 through 9.0.89. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.35 through 8.5.100 and 7.0.92 through 7.0.109. Other EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M21, 10.1.25, or 9.0.90, which fixes the issue. Apache Tomcat, under certain configurations on any platform, allows an attacker to cause an OutOfMemoryError by abusing the TLS handshake proc

    • Auf 9.0.70-2ubuntu0.1+esm2 aktualisieren
    Veröffentlicht Aktualisiert
  9. CVE-2024-34750

    Hoch · CVSS 7.5EPSS 4,6%Korrektur verfügbar

    Apache Tomcat: HTTP/2 excess header handling DoS

    Improper Handling of Exceptional Conditions, Uncontrolled Resource Consumption vulnerability in Apache Tomcat. When processing an HTTP/2 stream, Tomcat did not handle some cases of excessive HTTP headers correctly. This led to a miscounting of active HTTP/2 streams which in turn led to the use of an incorrect infinite timeout which allowed connections to remain open which should have been closed. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M20, from 10.1.0-M1 through 10.1.24, from 9.0.0-M1 through 9.0.89. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 though 8.5.100. 

    • Auf 9.0.70-2ubuntu0.1+esm2 aktualisieren
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  10. CVE-2024-23672

    Mittel · CVSS 6.3EPSS 2,31%Korrektur verfügbar

    Apache Tomcat: WebSocket DoS with incomplete closing handshake

    Denial of Service via incomplete cleanup vulnerability in Apache Tomcat. It was possible for WebSocket clients to keep WebSocket connections open leading to increased resource consumption.This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M16, from 10.1.0-M1 through 10.1.18, from 9.0.0-M1 through 9.0.85, from 8.5.0 through 8.5.98. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M17, 10.1.19, 9.0.86 or 8.5.99 which fix the issue.

    • Auf 9.0.70-2ubuntu0.1+esm2 aktualisieren
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  11. CVE-2024-24549

    Hoch · CVSS 7.5EPSS 23,07%Korrektur verfügbar

    Apache Tomcat: HTTP/2 header handling DoS

    Denial of Service due to improper input validation vulnerability for HTTP/2 requests in Apache Tomcat. When processing an HTTP/2 request, if the request exceeded any of the configured limits for headers, the associated HTTP/2 stream was not reset until after all of the headers had been processed.This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M16, from 10.1.0-M1 through 10.1.18, from 9.0.0-M1 through 9.0.85, from 8.5.0 through 8.5.98. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M17, 10.1.19, 9.0.86 or 8.5.99 which fix the issue.

    • Auf 9.0.70-2ubuntu0.1+esm2 aktualisieren
    Veröffentlicht Aktualisiert
  12. CVE-2023-45648

    Mittel · CVSS 5.3EPSS 5,88%Öffentlicher ExploitKorrektur verfügbar

    Apache Tomcat: Trailer header parsing too lenient

    Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially crafted, invalid trailer header could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.

    • Auf 9.0.70-2ubuntu0.1+esm2 aktualisieren
    Veröffentlicht Aktualisiert
  13. CVE-2023-42795

    Mittel · CVSS 5.3EPSS 2,51%Korrektur verfügbar

    Apache Tomcat: Failure during request clean-up leads to sensitive data leaking to subsequent requests

    Incomplete Cleanup vulnerability in Apache Tomcat.When recycling various internal objects in Apache Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.80 and from 8.5.0 through 8.5.93, an error could cause Tomcat to skip some parts of the recycling process leading to information leaking from the current request/response to the next. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fixes the issue.

    • Auf 9.0.70-2ubuntu0.1+esm2 aktualisieren
    Veröffentlicht Aktualisiert
  14. CVE-2023-28708

    Mittel · CVSS 4.3EPSS 1,83%Korrektur verfügbar

    Apache Tomcat: JSESSIONID Cookie missing secure attribute in some configurations

    When using the RemoteIpFilter with requests received from a reverse proxy via HTTP that include the X-Forwarded-Proto header set to https, session cookies created by Apache Tomcat 11.0.0-M1 to 11.0.0.-M2, 10.1.0-M1 to 10.1.5, 9.0.0-M1 to 9.0.71 and 8.5.0 to 8.5.85 did not include the secure attribute. This could result in the user agent transmitting the session cookie over an insecure channel. Older, EOL versions may also be affected.

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