Improper Authentication Affecting org.apache.tomcat:tomcat-coyote-ffm package, versions [9.0.92,9.0.122)[10.1.22,10.1.60)[11.0.0-M14,11.0.26)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-ORGAPACHETOMCAT-21246676
- published19 Oct 2026
- disclosed23 Sept 2026
- creditMike Read
Introduced: 23 Sep 2026
CVE-2026-86248 (opens in a new tab)How to fix?
Upgrade org.apache.tomcat:tomcat-coyote-ffm to version 9.0.122, 10.1.60, 11.0.26 or higher.
Overview
Affected versions of this package are vulnerable to Improper Authentication due to OCSP handling in the OpenSSL Panama OpenSSLEngine. An attacker can authenticate with a client certificate that is not checked through OCSP by presenting a certificate with no usable OCSP responder URL to a server with soft-fail disabled; Tomcat does not reject the certificate when it cannot make an OCSP request.