SB2026021766 - OCSP verification bypass in Apache Tomcat
Published: February 17, 2026 Updated: February 18, 2026
Security Bulletin ID
SB2026021766
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper authorization (CVE-ID: CVE-2026-24734)
The vulnerability allows a remote attacker to bypass authorization checks.
The vulnerability exists due to incomplete OCSP verification checks. When using an OCSP responder, Tomcat's FFM integration with OpenSSL does not complete verification or freshness checks on the OCSP response. A remote attacker can bypass certificate revocation and gain unauthorized access to the application.
Remediation
Install update from vendor's website.