CVE-2026-86246

Apache Tomcat Native: Insecure OpenSSL options enabled

State: Published
Severity: 9.1 Critical
Published: Sep 23, 2026
Updated: Sep 23, 2026
Reserved: Sep 6, 2026

Description

Initialization of a resource with an insecure default vulnerability in Apache Tomcat Native enabled insecure options by default including ALLOW_CLIENT_RENEGOTIATION, NO_EXTENDED_MASTER_SECRET, IGNORE_UNEXPECTED_EOF and ALLOW_NO_DHE_KEX.

This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Earlier unsupported versions may also be affected.

Users are recommended to upgrade to version 2.0.16 or 1.3.9, which fix the issue.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	CISA-ADP

Weaknesses

CWE-1188 Initialization of a resource with an insecure default

Affected Products

Product	Versions
Apache Tomcat NativeApache Software Foundation	2.0.0 through 2.0.15Affected 1.3.0 through 1.3.8Affected

References

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