Initialization of a resource with an insecure default vulnerability in Apache Tomcat Native enabled insecure options by default including… (CVE-2026-86246)
Apache Tomcat Native versions from 2.0.0 through 2.0.15 and 1.3.0 through 1.3.8 contain a vulnerability where insecure default options are enabled during resource initialization. These options include ALLOW_CLIENT_RENEGOTIATION, NO_EXTENDED_MASTER_SECRET, IGNORE_UNEXPECTED_EOF, and ALLOW_NO_DHE_KEX. This vulnerability is addressed in versions 2.0.16 and 1.3.9.
AI Analysis
Technical Summary
CVE-2026-86246 describes an initialization vulnerability in Apache Tomcat Native where insecure default options are enabled. These insecure options potentially weaken the security of TLS connections by allowing client renegotiation, disabling extended master secret enforcement, ignoring unexpected EOFs, and allowing no DHE key exchange. The vulnerability affects Apache Tomcat Native versions from 2.0.0 through 2.0.15 and 1.3.0 through 1.3.8. The vendor has addressed the issue in versions 2.0.16 and 1.3.9.
Potential Impact
The vulnerability has a high impact on confidentiality and integrity (CVSS 9.1) because insecure default options can allow attackers to weaken TLS security, potentially enabling man-in-the-middle attacks or other cryptographic attacks. Availability is not impacted. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Users should upgrade Apache Tomcat Native to version 2.0.16 or 1.3.9 or later to remediate this vulnerability. These versions disable the insecure default options. No other mitigation is indicated by the vendor.
Initialization of a resource with an insecure default vulnerability in Apache Tomcat Native enabled insecure options by default including… (CVE-2026-86246)
Description
Apache Tomcat Native versions from 2.0.0 through 2.0.15 and 1.3.0 through 1.3.8 contain a vulnerability where insecure default options are enabled during resource initialization. These options include ALLOW_CLIENT_RENEGOTIATION, NO_EXTENDED_MASTER_SECRET, IGNORE_UNEXPECTED_EOF, and ALLOW_NO_DHE_KEX. This vulnerability is addressed in versions 2.0.16 and 1.3.9.
CVSS v3.1
Score 9.1critical
Affected software
pkg:maven/org.apache.tomcat/tomcat-nativeRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86246 describes an initialization vulnerability in Apache Tomcat Native where insecure default options are enabled. These insecure options potentially weaken the security of TLS connections by allowing client renegotiation, disabling extended master secret enforcement, ignoring unexpected EOFs, and allowing no DHE key exchange. The vulnerability affects Apache Tomcat Native versions from 2.0.0 through 2.0.15 and 1.3.0 through 1.3.8. The vendor has addressed the issue in versions 2.0.16 and 1.3.9.
Potential Impact
The vulnerability has a high impact on confidentiality and integrity (CVSS 9.1) because insecure default options can allow attackers to weaken TLS security, potentially enabling man-in-the-middle attacks or other cryptographic attacks. Availability is not impacted. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Users should upgrade Apache Tomcat Native to version 2.0.16 or 1.3.9 or later to remediate this vulnerability. These versions disable the insecure default options. No other mitigation is indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-9p2m-jvmj-wh8q
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-86246"]
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab4be97f7a7c54106f0df93
Added to database: 09/24/2026, 06:09:27 UTC
Last enriched: 09/24/2026, 07:00:12 UTC
Last updated: 09/25/2026, 04:47:34 UTC
Views: 14
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