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tomcat-native — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2026-86247

Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification requirements to be down-graded for some configurations. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Unsupported versions may also be affected. Users are recommended to upgrade to version 2.0.16 or 1.3.9, which fixes the issue.

Products
tomcat-native
Affected versions
1.2.35-1, 1.3.1-1, 1.3.7-1, 2.0.14-1, 2.0.16-1
Fixed versions
2.0.16-1
CVEs
CVE-2026-86247
Confirmed fixed CVEs
Not specified
Updated in this feed
28 Oct 2026, 03:41 UTC · Revision 1

Source evidence

DEBIAN-CVE-2026-86247

core-osv · Original source

Published 23 Sept 2026, 13:17 UTC

Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification requirements to be down-graded for some configurations. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Unsupported versions may also be affected. Users are recommended to upgrade to version 2.0.16 or 1.3.9, which fixes the issue.

osv:DEBIAN-CVE-2026-86247

tomcat-native

Fixed versions: Not specified

tomcat-native

Fixed versions: Not specified

tomcat-native

Fixed versions: 2.0.16-1

Complete source record
{
  "id": "0295e7218cd1e3647260aea0d368e19cfca7a1f63590101c8da29d03972546f1",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-86247",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-86247",
    "summary": "Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification requirements to be down-graded for some configurations. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Unsupported versions may also be affected. Users are recommended to upgrade to version 2.0.16 or 1.3.9, which fixes the issue.",
    "evidence": "osv:DEBIAN-CVE-2026-86247",
    "products": [
      {
        "name": {
          "value": "tomcat-native",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.2.35-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.3.1-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.3.7-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.0.14-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.0.16-1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tomcat-native",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.3.1-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.3.7-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.0.14-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.0.16-1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tomcat-native",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.0.16-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1.3.1-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.3.7-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.0.14-1",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2026-86247",
      "aliases": [
        "DEBIAN-CVE-2026-86247"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "tomcat-native",
            "purl": "pkg:deb/debian/tomcat-native?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "1.2.35-1",
            "1.3.1-1",
            "1.3.7-1",
            "2.0.14-1",
            "2.0.16-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86247.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "tomcat-native",
            "purl": "pkg:deb/debian/tomcat-native?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "1.3.1-1",
            "1.3.7-1",
            "2.0.14-1",
            "2.0.16-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86247.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.0.16-1"
                }
              ]
            }
          ],
          "package": {
            "name": "tomcat-native",
            "purl": "pkg:deb/debian/tomcat-native?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "1.3.1-1",
            "1.3.7-1",
            "2.0.14-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86247.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-07T09:47:39.984252212Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-86247"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-86247"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-86247",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 94679,
  "published_at": "2026-09-23T13:17:31.237+00:00"
}