CVE-2026-86247

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Source
https://cve.org/CVERecord?id=CVE-2026-86247
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86247.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-86247
Downstream
DEBIAN (1)
MGASA (1)
MINI (1)
openSUSE (3)
SUSE (4)
UBUNTU (1)
Related
openSUSE (3)
SUSE (4)
Published
2026-09-23T12:31:53Z
Modified
2026-10-24T10:30:59Z
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
Introduced
39c19afe4a3df7ea4fda778d82dc25bd494a110c
Last Affected
1ac2db19bf68287b527d166128ab0d62d0d4097a
Introduced
998746966815e1ae105cba9f2681d37cc30249bc
Last Affected
8c61da2f325763f65214bdb4876641cbe31a2f0f
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "2.0.0"
                },
                {
                    "last_affected":  "2.0.15"
                }
            ],
            "source":  "DESCRIPTION"
        },
        {
            "range":  [
                {
                    "introduced":  "1.3.0"
                },
                {
                    "last_affected":  "1.3.8"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Database specific

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