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Crítica

Apache Tomcat - HTTP/2 request headers not validated

  • Publicada: 12.05.2026
  • Actualizado: 11.10.2026 13:20

Versions Affected: Apache Tomcat 11.0.0-M1 to 11.0.21 Apache Tomcat 10.1.0-M1 to 10.1.54 Apache Tomcat 9.0.0.M1 to 9.0.117 Older, unsupported versions may also be affected

Description: HTTP/2 request headers were not validated which may have triggered unexpected application behaviour if the application (quite reasonably) assumed that header value exposed through the Servlet API would be specification compliant.

Mitigation: Users of the affected versions should apply one of the following mitigations:

  • Upgrade to Apache Tomcat 11.0.22 or later
  • Upgrade to Apache Tomcat 10.1.55 or later
  • Upgrade to Apache Tomcat 9.0.118 or later

Credit: This issue was identified by Dawit Jeong (@dawitngoliath)

Software afectado

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PlataformaPaqueteVersiones vulnerablesCorregida en
Java / Kotlin (Maven) org.apache.tomcat.embed:tomcat-embed-core >= 8.5.0, < 9.0.118, >= 10.1.0-M1, < 10.1.55, >= 11.0.0-M1, < 11.0.22 9.0.118, 10.1.55, 11.0.22
Java / Kotlin (Maven) org.apache.tomcat:tomcat >= 8.5.0, < 9.0.118, >= 10.1.0-M1, < 10.1.55, >= 11.0.0-M1, < 11.0.22 9.0.118, 10.1.55, 11.0.22
Java / Kotlin (Maven) org.apache.tomcat:tomcat-coyote >= 8.5.0, < 9.0.118, >= 10.1.0-M1, < 10.1.55, >= 11.0.0-M1, < 11.0.22 9.0.118, 10.1.55, 11.0.22

Referencias

Puntuación CVSS 9.8/10
Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Debilidad (CWE)
CWE-20
Plataforma
Java / Kotlin (Maven)
Paquete
org.apache.tomcat.embed:tomcat-embed-core, org.apache.tomcat:tomcat, org.apache.tomcat:tomcat-coyote
Publicada
12.05.2026
Actualizado
11.10.2026 13:20

Fuentes y licencias

OSV / GitHub Advisory Database - GHSA-r29c-68gh-xp6x - CC BY 4.0

Historial de vulnerabilidades: org.apache.tomcat.embed:tomcat-embed-core

Todas las vulnerabilidades publicadas de este paquete (Java / Kotlin (Maven)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.

Todas (77) en el archivo
Entradas en total
77
Primera → última
10.2018 08.2026
Sin corrección
0
Explotada en ataques
5

Distribución por gravedad

  • Crítica 11
  • Alta 36
  • Media 25
  • Baja 5

Divulgaciones por año

Gravedad:
  1. Apache Tomcat's DIGEST authenticator has an Authentication Bypass by Capture-replay vulnerability
    Crítica · 9.8 CVE-2026-65905 >= 11.0.0-M1, < 11.0.25, >= 10.1.0-M1, < 10.1.58, >= 9.0.0.M1, < 9.0.121, >= 8.5.0, <= 8.5.100, >= 7.0.30, <= 7.0.109 11.0.25, 10.1.58, 9.0.121
  2. Apache Tomcat has an Improper Access Control, Incorrect Authorization vulnerability
    Crítica · 9.1 CVE-2026-65182 >= 11.0.0-M1, < 11.0.25, >= 10.1.0-M1, < 10.1.58, >= 9.0.0-M1, < 9.0.121, >= 8.5.0, <= 8.5.100, >= 7.0.0, <= 7.0.109 11.0.25, 10.1.58, 9.0.121
  3. Apache Tomcat's FORM authentication process has an Incorrect Authorization vulnerability
    Crítica · 9.1 CVE-2026-68525 >= 11.0.0-M1, < 11.0.25, >= 10.1.0-M1, < 10.1.58, >= 9.0.0-M1, < 9.0.121, >= 8.5.0, <= 8.5.100, >= 7.0.0, <= 7.0.109 11.0.25, 10.1.58, 9.0.121
  4. Apache Tomcat: Unbounded read in WebDAV LOCK and PROPFIND handling
    Alta · 7.5 CVE-2026-41284 < 9.0.118, >= 10.1.0-M1, < 10.1.55, >= 11.0.0-M1, < 11.0.22 9.0.118, 10.1.55, 11.0.22
  5. Apache Tomcat - Digest authenticator will authenticate any unknown user
    Crítica · 9.8 CVE-2026-43512 < 9.0.118, >= 10.1.0-M1, < 10.1.55, >= 11.0.0-M1, < 11.0.22 9.0.118, 10.1.55, 11.0.22
  6. Apache Tomcat: LockOutRealm treats user names as case-sensitive
    Alta · 7.5 CVE-2026-43513 < 9.0.118, >= 10.1.0-M1, < 10.1.55, >= 11.0.0-M1, < 11.0.22 9.0.118, 10.1.55, 11.0.22
  7. Apache Tomcat - Security constraints not correctly applied
    Crítica · 9.1 CVE-2026-43515 < 9.0.118, >= 10.1.0-M1, < 10.1.55, >= 11.0.0-M1, < 11.0.22 9.0.118, 10.1.55, 11.0.22
  8. Apache Tomcat - WebSocket authentication header exposure
    Alta · 7.3 CVE-2026-42498 < 9.0.118, >= 10.1.0-M1, < 10.1.55, >= 11.0.0-M1, < 11.0.22 9.0.118, 10.1.55, 11.0.22
  9. Apache Tomcat - HTTP/2 request headers not validated esta entrada
    Crítica · 9.8 CVE-2026-41293 >= 8.5.0, < 9.0.118, >= 10.1.0-M1, < 10.1.55, >= 11.0.0-M1, < 11.0.22 9.0.118, 10.1.55, 11.0.22
  10. Apache Tomcat vulnerable to Insertion of Sensitive Information into Log File
    Alta · 7.5 CVE-2026-34487 >= 9.0.13, < 9.0.117, >= 10.1.0-M1, < 10.1.54, >= 11.0.0-M1, < 11.0.21 9.0.117, 10.1.54, 11.0.21
  11. Apache Tomcat has an Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve
    Alta · 7.5 CVE-2026-34483 >= 9.0.40, < 9.0.116, >= 10.1.0-M1, < 10.1.54, >= 11.0.0-M1, < 11.0.21 9.0.116, 10.1.54, 11.0.21
  12. Apache Tomcat has an HTTP Request/Response Smuggling vulnerability
    Alta · 7.5 CVE-2026-24880 >= 7.0.0, < 9.0.116, >= 10.1.0-M1, < 10.1.52, >= 11.0.0-M1, < 11.0.20 9.0.116, 10.1.52, 11.0.20
  13. Apache Tomcat: Configured cipher preference order not preserved
    Alta · 7.5 CVE-2026-29129 >= 9.0.114, < 9.0.116, >= 10.1.51, < 10.1.53, >= 11.0.16, < 11.0.20 9.0.116, 10.1.53, 11.0.20
  14. Apache Tomcat has an Improper Input Validation vulnerability
    Alta · 7.5 CVE-2026-24734 >= 11.0.0-M1, < 11.0.18, >= 10.1.0-M7, < 10.1.52, >= 9.0.83, < 9.0.115 11.0.18, 10.1.52, 9.0.115
  15. Apache Tomcat Vulnerable to Relative Path Traversal
    Alta · 7.5 CVE-2025-55752 >= 11.0.0-M1, < 11.0.11, >= 10.1.0-M1, < 10.1.45, >= 9.0.0-M11, < 9.0.109, >= 8.5.6, <= 8.5.100 11.0.11, 10.1.45, 9.0.109
  16. Apache Tomcat Improper Resource Shutdown or Release vulnerability
    Alta · 7.5 CVE-2025-48989 >= 11.0.0-M1, < 11.0.10, >= 10.1.0-M1, < 10.1.44, >= 9.0.0.M1, < 9.0.108 11.0.10, 10.1.44, 9.0.108
  17. Apache Tomcat Coyote vulnerable to Denial of Service via excessive HTTP/2 streams
    Alta · 7.5 CVE-2025-53506 >= 8.5.0, <= 8.5.100, >= 9.0.0.M1, < 9.0.107, >= 10.1.0-M1, < 10.1.43, >= 11.0.0-M1, < 11.0.9 9.0.107, 10.1.43, 11.0.9
  18. Apache Tomcat Catalina is vulnerable to DoS attack through bypassing of size limits
    Alta · 7.5 CVE-2025-52520 >= 11.0.0-M1, < 11.0.9, >= 10.1.0-M1, < 10.1.43, >= 9.0.0.M1, < 9.0.107, >= 8.5.0, <= 8.5.100 11.0.9, 10.1.43, 9.0.107
  19. Apache Tomcat - DoS in multipart upload
    Alta · 7.5 CVE-2025-48988 >= 11.0.0-M1, < 11.0.8, >= 10.1.0-M1, < 10.1.42, >= 9.0.0.M1, < 9.0.106, >= 8.5.0, <= 8.5.100 11.0.8, 10.1.42, 9.0.106
  20. Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT
    Crítica · 9.8 Explotada en ataques CVE-2025-24813 >= 11.0.0-M1, < 11.0.3, >= 10.1.0-M1, < 10.1.35, >= 9.0.0.M1, < 9.0.99, >= 8.5.0, <= 8.5.100 11.0.3, 10.1.35, 9.0.99
  21. Apache Tomcat Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability
    Alta CVE-2024-56337 >= 11.0.0-M1, < 11.0.2, >= 10.1.0-M1, < 10.1.34, >= 9.0.0.M1, < 9.0.98 11.0.2, 10.1.34, 9.0.98
  22. Apache Tomcat Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability
    Alta · 9.8 CVE-2024-50379 >= 11.0.0-M1, < 11.0.2, >= 10.1.0-M1, < 10.1.34, >= 9.0.0.M1, < 9.0.98, >= 8.5.0, <= 8.5.100 11.0.2, 10.1.34, 9.0.98
  23. Apache Tomcat Allocation of Resources Without Limits or Throttling vulnerability
    Alta · 8.6 CVE-2024-38286 >= 11.0.0-M1, < 11.0.0-M21, >= 10.1.0-M1, < 10.1.25, >= 9.0.13, < 9.0.90, >= 8.5.35, <= 8.5.100, >= 7.0.92, <= 7.0.109 11.0.0-M21, 10.1.25, 9.0.90
  24. Apache Tomcat - Denial of Service
    Alta · 7.5 CVE-2024-34750 >= 11.0.0-M1, < 11.0.0-M21, >= 10.1.0-M1, < 10.1.25, >= 9.0.0-M1, < 9.0.90, >= 8.5.0, <= 8.5.100 11.0.0-M21, 10.1.25, 9.0.90
  25. Apache Tomcat Improper Input Validation vulnerability
    Alta · 7.5 CVE-2023-46589 >= 11.0.0-M1, < 11.0.0-M11, >= 10.1.0-M1, < 10.1.16, >= 9.0.0-M1, < 9.0.83, >= 8.5.0, < 8.5.96 11.0.0-M11, 10.1.16, 9.0.83, 8.5.96
  26. Apache Tomcat - Fix for CVE-2023-24998 was incomplete
    Alta · 7.5 CVE-2023-28709 >= 11.0.0-M2, < 11.0.0-M5, >= 10.1.5, < 10.1.8, >= 9.0.71, < 9.0.74 11.0.0-M5, 10.1.8, 9.0.74
  27. Apache Tomcat vulnerable to information leak
    Alta · 7.5 CVE-2023-34981 >= 11.0.0-M5, < 11.0.0-M6, >= 10.1.8, < 10.1.9, >= 9.0.74, < 9.0.75 11.0.0-M6, 10.1.9, 9.0.75
  28. Apache Commons FileUpload denial of service vulnerability
    Alta · 7.5 CVE-2023-24998 >= 10.1.0-M1, < 10.1.5, >= 11.0.0-M2, < 11.0.0-M5, >= 8.5.85, < 8.5.88, >= 9.0.0-M1, < 9.0.71 10.1.5, 11.0.0-M5, 8.5.88, 9.0.71
  29. Apache Tomcat improperly escapes input from JsonErrorReportValve
    Alta · 7.5 CVE-2022-45143 >= 8.5.83, < 8.5.84, >= 9.0.40, < 9.0.69, >= 10.1.0, < 10.1.2 8.5.84, 9.0.69, 10.1.2
  30. Apache Tomcat may reject request containing invalid Content-Length header
    Alta · 7.5 CVE-2022-42252 >= 8.5.0, < 8.5.83, >= 9.0.0-M1, < 9.0.68, >= 10.0.0-M1, < 10.0.27, >= 10.1.0-M1, < 10.1.1 8.5.83, 9.0.68, 10.0.27, 10.1.1
  31. Unrestricted Upload of File with Dangerous Type Apache Tomcat
    Alta · 8.1 Explotada en ataques CVE-2017-12617 >= 9.0.0.M1, < 9.0.1, >= 8.5.0, < 8.5.23, >= 8.0.0-RC1, < 8.0.47, >= 7.0.0, < 7.0.82 9.0.1, 8.5.23, 8.0.47, 7.0.82
  32. Expected Behavior Violation in Apache Tomcat
    Crítica · 9.8 CVE-2017-5651 >= 9.0.0.M1, < 9.0.0.M19, >= 8.5.0, < 8.5.13 9.0.0.M19, 8.5.13
  33. Exposure of Resource to Wrong Sphere in Apache Tomcat
    Crítica · 9.1 CVE-2017-5648 >= 9.0.0.M1, < 9.0.0.M18, >= 8.5.0, < 8.5.13, >= 8.0.0, < 8.0.42, >= 7.0.0, < 7.0.76 9.0.0.M18, 8.5.13, 8.0.42, 7.0.76
  34. Uncontrolled Resource Consumption in Apache Tomcat
    Alta · 7.5 CVE-2020-11996 >= 10.0.0-M1, < 10.0.0-M5, >= 9.0.0.M1, < 9.0.35, >= 8.5.0, < 8.5.55 10.0.0-M5, 9.0.35, 8.5.55
  35. Exposure of Sensitive Information to an Unauthorized Actor in Apache Tomcat
    Alta · 7.5 CVE-2021-25122 >= 10.0.0-M1, < 10.0.2, >= 9.0.0-M1, < 9.0.43, >= 8.5.0, < 8.5.63 10.0.2, 9.0.43, 8.5.63
  36. Potential remote code execution in Apache Tomcat
    Alta · 7.0 CVE-2021-25329 >= 10.0.0-M1, < 10.0.2, >= 9.0.0, < 9.0.41, >= 8.0.0, < 8.5.61, >= 7.0.0, < 7.0.108 10.0.2, 9.0.41, 8.5.61, 7.0.108
  37. Improper Privilege Management in Tomcat
    Crítica · 9.8 Explotada en ataques CVE-2020-1938 >= 9.0.0, < 9.0.31, >= 8.0.0, < 8.5.51, >= 7.0.0, < 7.0.100 9.0.31, 8.5.51, 7.0.100
  38. Apache Tomcat Denial of Service vulnerability
    Alta · 7.5 CVE-2019-0199 >= 9.0.0, < 9.0.16, >= 8.0.0, < 8.5.38 9.0.16, 8.5.38
  39. Potential remote code execution in Apache Tomcat
    Alta · 7.0 CVE-2020-9484 >= 10.0.0-M1, < 10.0.0-M5, >= 9.0.0, < 9.0.35, >= 8.0.0, < 8.5.55, >= 7.0.0, < 7.0.104 10.0.0-M5, 9.0.35, 8.5.55, 7.0.104
  40. Insufficiently Protected Credentials in Apache Tomcat
    Alta · 7.0 CVE-2019-12418 < 7.0.99, >= 8.0.0, < 8.5.49, >= 9.0.0, < 9.0.29 7.0.99, 8.5.49, 9.0.29
  41. In Apache Tomcat, when using FORM authentication there was a narrow window where an attacker could perform a session fixation attack
    Alta · 7.5 CVE-2019-17563 < 7.0.99, >= 8.0.0, < 8.5.50, >= 9.0.0, < 9.0.30 7.0.99, 8.5.50, 9.0.30
  42. Improper Locking in Apache Tomcat
    Alta · 7.5 CVE-2019-10072 >= 9.0.0.M1, < 9.0.20, >= 8.5.0, < 8.5.41 9.0.20, 8.5.41
  43. Apache Tomcat OS Command Injection vulnerability
    Alta · 8.1 CVE-2019-0232 >= 9.0.0.M1, < 9.0.17, >= 8.0.0, < 8.5.40, >= 7.0.0, < 7.0.94 9.0.17, 8.5.40, 7.0.94
  44. The host name verification missing in Apache Tomcat
    Alta · 7.5 CVE-2018-8034 >= 9.0.0, < 9.0.10, >= 8.5.0, < 8.5.32, >= 8.0.0, < 8.0.53, >= 7.0.35, < 7.0.90 9.0.10, 8.5.32, 8.0.53, 7.0.90
  45. The defaults settings for the CORS filter provided in Apache Tomcat are insecure and enable 'supportsCredentials' for all origins
    Crítica · 9.8 CVE-2018-8014 >= 9.0.0.M1, < 9.0.9, >= 8.5.0, < 8.5.32, >= 8.0.0RC1, < 8.0.53, >= 7.0.41, < 7.0.88 9.0.9, 8.5.32, 8.0.53, 7.0.88
  46. In Apache Tomcat there is an improper handing of overflow in the UTF-8 decoder
    Alta · 7.5 CVE-2018-1336 >= 9.0.0.M9, < 9.0.8, >= 8.5.0, < 8.5.31, >= 8.0.0RC1, < 8.0.51, >= 7.0.28, < 7.0.87 9.0.8, 8.5.31, 8.0.51, 7.0.87
  47. When running Apache Tomcat on Windows with HTTP PUTs enabled it was possible to upload a JSP file to the server
    Alta · 8.1 Explotada en ataques CVE-2017-12615 >= 7.0.0, < 7.0.79 7.0.79

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