UnratedFix available

Moderate: tomcat9 security update

Type: advisorySource: OSV1 source record

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process. Tomcat is developed in an open and participatory environment and released under the Apache Software License version 2.0. Tomcat is intended to be a collaboration of the best-of-breed developers from around the world. Security Fix(es): * Apache Tomcat: Apache Tomcat: Improper Input Validation vulnerability due to incomplete fix (CVE-2026-32990) * tomcat-coyote: Apache Tomcat: Authentication bypass via digest authentication (CVE-2026-43512) * tomcat-coyote: Apache Tomcat: HTTP/2 request headers not validated (CVE-2026-41293) * tomcat-coyote: Apache Tomcat: Information disclosure due to HTTP Authentication Header exposure during WebSocket authentication. (CVE-2026-42498) * tomcat-coyote: tomcat: Improper Authorization allows security bypass (CVE-2026-43515) * tomcat-catalina: Apache Tomcat: Improper Handling of Case Sensitivity in LockOutRealm (CVE-2026-43513) * tomcat: Apache Tomcat: Security constraint bypass via improper URL encoding in rewrite valve (CVE-2026-59083) * tomcat: Apache Tomcat: Insufficient documentation for EncryptInterceptor may lead to insecure configurations (CVE-2026-59084) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to t

Announced 17 Sept 2026Group revision 1

Original source ↗

ALSA-2026:68651

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:ALSA-2026:68651

tomcat9

Source reference: /affected/0/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el10_2.alma.1
Source reference: /affected/0/ranges
Prerequisites: Not stated in this record

tomcat9-admin-webapps

Source reference: /affected/1/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el10_2.alma.1
Source reference: /affected/1/ranges
Prerequisites: Not stated in this record

tomcat9-docs-webapp

Source reference: /affected/2/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el10_2.alma.1
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

tomcat9-el-3.0-api

Source reference: /affected/3/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el10_2.alma.1
Source reference: /affected/3/ranges
Prerequisites: Not stated in this record

tomcat9-jsp-2.3-api

Source reference: /affected/4/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el10_2.alma.1
Source reference: /affected/4/ranges
Prerequisites: Not stated in this record

tomcat9-lib

Source reference: /affected/5/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el10_2.alma.1
Source reference: /affected/5/ranges
Prerequisites: Not stated in this record

tomcat9-servlet-4.0-api

Source reference: /affected/6/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el10_2.alma.1
Source reference: /affected/6/ranges
Prerequisites: Not stated in this record

tomcat9-webapps

Source reference: /affected/7/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el10_2.alma.1
Source reference: /affected/7/ranges
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el10_2.alma.1"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat9",
      "purl": "pkg:rpm/almalinux/tomcat9",
      "ecosystem": "AlmaLinux:10"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:68651.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el10_2.alma.1"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat9-admin-webapps",
      "purl": "pkg:rpm/almalinux/tomcat9-admin-webapps",
      "ecosystem": "AlmaLinux:10"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:68651.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el10_2.alma.1"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat9-docs-webapp",
      "purl": "pkg:rpm/almalinux/tomcat9-docs-webapp",
      "ecosystem": "AlmaLinux:10"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:68651.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el10_2.alma.1"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat9-el-3.0-api",
      "purl": "pkg:rpm/almalinux/tomcat9-el-3.0-api",
      "ecosystem": "AlmaLinux:10"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:68651.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el10_2.alma.1"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat9-jsp-2.3-api",
      "purl": "pkg:rpm/almalinux/tomcat9-jsp-2.3-api",
      "ecosystem": "AlmaLinux:10"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:68651.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el10_2.alma.1"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat9-lib",
      "purl": "pkg:rpm/almalinux/tomcat9-lib",
      "ecosystem": "AlmaLinux:10"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:68651.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el10_2.alma.1"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat9-servlet-4.0-api",
      "purl": "pkg:rpm/almalinux/tomcat9-servlet-4.0-api",
      "ecosystem": "AlmaLinux:10"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:68651.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el10_2.alma.1"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat9-webapps",
      "purl": "pkg:rpm/almalinux/tomcat9-webapps",
      "ecosystem": "AlmaLinux:10"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:68651.json"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #23639 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 06:22:13 GMT
Publisher date: Thu, 17 Sep 2026 00:00:00 GMT

Read the original announcement

Revision history

25 Oct 2026ALSA-2026:68651 · Revision 1Source updated