by Kastro
Paper/Archive/CVE-2026-101296

CVE-2026-101296

Apache Software Foundation Apache Tomcat — Apache Tomcat: JNDIRealm bind credential validation fails open for non-GSSAPI SASL mechanisms

EPSS 0.6%CVSS 9.1
critical.is priorityof 100
37
CVSS 9.1 (ADP)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 50.0.500 × 2010.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Apache Tomcat11.0.0-M1 – 11.0.26–CNA
Apache Tomcat10.1.0-M1 – 10.1.60–CNA
Apache Tomcat9.0.0.M1 – 9.0.122–CNA
Apache Tomcat8.5.0 – 8.5.100–CNA
Apache Tomcat7.0.0 – 7.0.109–CNA

Scores by source

CISA ADP9.1CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

advisorylists.apache.org/thread.html/bl52b9go9ckoov8x4v3dt6rkm573cygdrefopenwall.com/lists/oss-security/2026/10/20/26