CVE-2026-86248
9.8 CRITICALPublished 2026-09-23 · Updated 2026-09-23
AI risk analysis
- Summary
- The flaw allows CLIENT_CERT authentication to fail improperly when soft fail is disabled, leading to potential unauthorized access.
- Exploitability
- Exploitation requires disabling soft fail and may be moderately difficult, depending on the environment configuration.
- Blast radius
- If exploited, this could result in unauthorized access to sensitive resources hosted on affected Apache Tomcat versions.
- Detection
- No reliable host or network indicator is derivable from the published description.
- Prioritized remediation
- Upgrade to Apache Tomcat version 11.0.26, 10.1.60, or 9.0.122.
Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.
NVD description
CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.25, from 10.1.22 through 10.1.59, from 9.0.92 through 9.0.121. Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-287
All references
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
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