usn-8551-1
Vulnerability from osv_ubuntu
Published
2026-07-15 14:15
Modified
2026-07-15 14:15
Summary
tomcat8 vulnerabilities
Details

It was discovered that Tomcat incorrectly handled authorization when multiple method constraints defined the same HTTP method. A remote attacker could possibly use this issue to bypass authorization restrictions. (CVE-2026-43515)

It was discovered that the Tomcat number guess example application did not properly sanitize user-supplied input. An attacker could possibly use this issue to inject malicious scripts, resulting in cross-site scripting. (CVE-2026-50229)

It was discovered that Tomcat incorrectly evaluated rewrite valve conditions in certain configurations. An attacker could possibly use this issue to bypass rewrite rules, resulting in unauthorized access. (CVE-2026-53404)

It was discovered that Tomcat incorrectly omitted certain authorization information when logging the effective web.xml configuration. An attacker could possibly use this issue to hide authorization constraints, resulting in reduced auditability. (CVE-2026-55276)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-43515",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-50229",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53404",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-55276",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libservlet3.1-java",
            "binary_version": "8.0.32-1ubuntu1.13+esm2"
          },
          {
            "binary_name": "libtomcat8-java",
            "binary_version": "8.0.32-1ubuntu1.13+esm2"
          },
          {
            "binary_name": "tomcat8",
            "binary_version": "8.0.32-1ubuntu1.13+esm2"
          },
          {
            "binary_name": "tomcat8-admin",
            "binary_version": "8.0.32-1ubuntu1.13+esm2"
          },
          {
            "binary_name": "tomcat8-common",
            "binary_version": "8.0.32-1ubuntu1.13+esm2"
          },
          {
            "binary_name": "tomcat8-docs",
            "binary_version": "8.0.32-1ubuntu1.13+esm2"
          },
          {
            "binary_name": "tomcat8-examples",
            "binary_version": "8.0.32-1ubuntu1.13+esm2"
          },
          {
            "binary_name": "tomcat8-user",
            "binary_version": "8.0.32-1ubuntu1.13+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "tomcat8",
        "purl": "pkg:deb/ubuntu/tomcat8@8.0.32-1ubuntu1.13+esm2?arch=source\u0026distro=esm-infra-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.0.32-1ubuntu1.13+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.0.26-1",
        "8.0.28-1",
        "8.0.30-1",
        "8.0.32-1",
        "8.0.32-1ubuntu1",
        "8.0.32-1ubuntu1.1",
        "8.0.32-1ubuntu1.2",
        "8.0.32-1ubuntu1.3",
        "8.0.32-1ubuntu1.4",
        "8.0.32-1ubuntu1.5",
        "8.0.32-1ubuntu1.6",
        "8.0.32-1ubuntu1.7",
        "8.0.32-1ubuntu1.8",
        "8.0.32-1ubuntu1.9",
        "8.0.32-1ubuntu1.10",
        "8.0.32-1ubuntu1.11",
        "8.0.32-1ubuntu1.13",
        "8.0.32-1ubuntu1.13+esm1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-43515",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-50229",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53404",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-55276",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libtomcat8-embed-java",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
          },
          {
            "binary_name": "libtomcat8-java",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
          },
          {
            "binary_name": "tomcat8",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
          },
          {
            "binary_name": "tomcat8-admin",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
          },
          {
            "binary_name": "tomcat8-common",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
          },
          {
            "binary_name": "tomcat8-docs",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
          },
          {
            "binary_name": "tomcat8-examples",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
          },
          {
            "binary_name": "tomcat8-user",
            "binary_version": "8.5.39-1ubuntu1~18.04.3+esm6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "tomcat8",
        "purl": "pkg:deb/ubuntu/tomcat8@8.5.39-1ubuntu1~18.04.3+esm6?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.5.39-1ubuntu1~18.04.3+esm6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.5.21-1ubuntu1",
        "8.5.29-1",
        "8.5.30-1",
        "8.5.30-1ubuntu1",
        "8.5.30-1ubuntu1.2",
        "8.5.30-1ubuntu1.3",
        "8.5.30-1ubuntu1.4",
        "8.5.39-1ubuntu1~18.04.1",
        "8.5.39-1ubuntu1~18.04.2",
        "8.5.39-1ubuntu1~18.04.3",
        "8.5.39-1ubuntu1~18.04.3+esm1",
        "8.5.39-1ubuntu1~18.04.3+esm2",
        "8.5.39-1ubuntu1~18.04.3+esm3",
        "8.5.39-1ubuntu1~18.04.3+esm4",
        "8.5.39-1ubuntu1~18.04.3+esm5"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that Tomcat incorrectly handled authorization when\nmultiple method constraints defined the same HTTP method. A remote\nattacker could possibly use this issue to bypass authorization\nrestrictions. (CVE-2026-43515)\n\nIt was discovered that the Tomcat number guess example application did\nnot properly sanitize user-supplied input. An attacker could possibly\nuse this issue to inject malicious scripts, resulting in cross-site\nscripting. (CVE-2026-50229)\n\nIt was discovered that Tomcat incorrectly evaluated rewrite valve\nconditions in certain configurations. An attacker could possibly use\nthis issue to bypass rewrite rules, resulting in unauthorized access.\n(CVE-2026-53404)\n\nIt was discovered that Tomcat incorrectly omitted certain authorization\ninformation when logging the effective web.xml configuration. An\nattacker could possibly use this issue to hide authorization\nconstraints, resulting in reduced auditability. (CVE-2026-55276)",
  "id": "USN-8551-1",
  "modified": "2026-07-15T14:15:28Z",
  "published": "2026-07-15T14:15:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8551-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-43515"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-50229"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-53404"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-55276"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "tomcat8 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-43515",
    "UBUNTU-CVE-2026-50229",
    "UBUNTU-CVE-2026-53404",
    "UBUNTU-CVE-2026-55276"
  ]
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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