CVE-2026-86247

Source
https://cve.org/CVERecord?id=CVE-2026-86247
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-86247.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-86247
Downstream
ALPINE (1)
DEBIAN (1)
MGASA (1)
MINI (1)
openSUSE (3)
SUSE (5)
UBUNTU (1)
Related
Published
2026-09-23T12:31:53Z
Modified
2026-10-31T18:11:57Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
Apache Tomcat Native: Client certificate requirements can be down-graded
Details

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.

Database specific
{
    "cna_assigner": "apache",
    "cwe_ids": [
        "CWE-366"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86247.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "introduced": "2.0.0"
                        },
                        {
                            "last_affected": "2.0.15"
                        },
                        {
                            "introduced": "1.3.0"
                        },
                        {
                            "last_affected": "1.3.8"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/apache/tomcat-native

Affected ranges

Type
GIT
Repo
https://github.com/apache/tomcat-native
Events
Database specific
Show details
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:apache:tomcat_native:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "1.3.0"
                },
                {
                    "fixed": "1.3.9"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:apache:tomcat_native:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "2.0.0"
                },
                {
                    "fixed": "2.0.16"
                }
            ],
            "source": "CPE_RANGE"
        }
    ]
}

Database specific

source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-86247.json"