UnratedFix available

Important: tomcat security update

Type: advisorySource: OSV1 source record

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies. Security Fix(es): * 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: Authentication bypass via missing critical step in JNDIRealm GSSAPI configuration (CVE-2026-55957) * 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 the CVE page(s) listed in the References section.

Announced 17 Sept 2026Group revision 1

Original source ↗

ALSA-2026:68677

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-2026:68677

tomcat

Source reference: /affected/0/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el8_10
Source reference: /affected/0/ranges
Prerequisites: Not stated in this record

tomcat-admin-webapps

Source reference: /affected/1/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el8_10
Source reference: /affected/1/ranges
Prerequisites: Not stated in this record

tomcat-docs-webapp

Source reference: /affected/2/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el8_10
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

tomcat-el-3.0-api

Source reference: /affected/3/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el8_10
Source reference: /affected/3/ranges
Prerequisites: Not stated in this record

tomcat-jsp-2.3-api

Source reference: /affected/4/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el8_10
Source reference: /affected/4/ranges
Prerequisites: Not stated in this record

tomcat-lib

Source reference: /affected/5/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el8_10
Source reference: /affected/5/ranges
Prerequisites: Not stated in this record

tomcat-servlet-4.0-api

Source reference: /affected/6/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el8_10
Source reference: /affected/6/ranges
Prerequisites: Not stated in this record

tomcat-webapps

Source reference: /affected/7/package/name

Affected versions: Not stated in this record
Fixed versions: 1:9.0.120-1.el8_10
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.el8_10"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat",
      "purl": "pkg:rpm/almalinux/tomcat",
      "ecosystem": "AlmaLinux:8"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:68677.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el8_10"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat-admin-webapps",
      "purl": "pkg:rpm/almalinux/tomcat-admin-webapps",
      "ecosystem": "AlmaLinux:8"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:68677.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el8_10"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat-docs-webapp",
      "purl": "pkg:rpm/almalinux/tomcat-docs-webapp",
      "ecosystem": "AlmaLinux:8"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:68677.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el8_10"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat-el-3.0-api",
      "purl": "pkg:rpm/almalinux/tomcat-el-3.0-api",
      "ecosystem": "AlmaLinux:8"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:68677.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el8_10"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat-jsp-2.3-api",
      "purl": "pkg:rpm/almalinux/tomcat-jsp-2.3-api",
      "ecosystem": "AlmaLinux:8"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:68677.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el8_10"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat-lib",
      "purl": "pkg:rpm/almalinux/tomcat-lib",
      "ecosystem": "AlmaLinux:8"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:68677.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el8_10"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat-servlet-4.0-api",
      "purl": "pkg:rpm/almalinux/tomcat-servlet-4.0-api",
      "ecosystem": "AlmaLinux:8"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:68677.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.0.120-1.el8_10"
          }
        ]
      }
    ],
    "package": {
      "name": "tomcat-webapps",
      "purl": "pkg:rpm/almalinux/tomcat-webapps",
      "ecosystem": "AlmaLinux:8"
    },
    "database_specific": {
      "source": "https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:68677.json"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #15306 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 00:57:00 GMT
Publisher date: Thu, 17 Sep 2026 00:00:00 GMT

Read the original announcement

Revision history

25 Oct 2026ALSA-2026:68677 · Revision 1Source updated