Recommended action window: Monitor and triage in normal cycle
NVD description
A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism allowed attackers to authenticate without providing the correct password. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
Unpatched vulnerabilities don't stay hidden on our atlas. #CVE CRITICAL VULNERABILITY DETECTED CVE ID: CVE-2026-101296 Vendor: Unknown Severity: Critical — CVSS 9.1 Product: Unknown Date: 2026-10-20 A critical vulnerability (Missing Critical Step in Authentication) has been disclosed affecting Unknown. Patch immediately. Powered by @Brandefense #ThreatIntel #CyberSecurity #CVE #Unknown
Tomcat details: • CVE-2026-101296: JNDIRealm with a non-GSSAPI SASL mechanism logs users in without checking the password. • CVE-2026-101356/103119: HTTP/2 async & AJP responses can reach the wrong user, leaking data. Vendor rating: Important. Upgrade beyond 11.0.26 / 10.1.60 / 9.0.122. https://lists.apache.org/thread/bl52b9go9ckoov8x4v3dt6rkm573cygd
Tomcat details: • CVE-2026-101296: JNDIRealm with a non-GSSAPI SASL mechanism logs users in without checking the password. • CVE-2026-101356/103119: HTTP/2 async & AJP responses can reach the wrong user, leaking data. Vendor rating: Important. Upgrade beyond 11.0.26 / 10.1.60 / 9.0.122. https://lists.apache.org/thread/bl52b9go9ckoov8x4v3dt6rkm573cygd