Missing Critical Step in Authentication in Apache Tomcat - CVE-2026-101296
Published: October 20, 2026
Vulnerability identifier: #VU156273
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-101296
CWE-ID: CWE-304
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass password authentication.
The vulnerability exists due to a missing critical authentication step in Apache Tomcat JNDIRealm when authenticating with a non-GSSAPI SASL mechanism. A remote attacker can attempt authentication without providing the correct password to gain access as an authenticated user.
Affected software
Apache Tomcat
How to mitigate CVE-2026-101296
Install security update from vendor's website.
Apache Tomcat - addressed in versions 9.0.123, 10.1.61, 11.0.27