Critical 9.1Published Oct 20, 2026

CVE-2026-101296Apache Tomcat: JNDIRealm bind credential validation fails open for non-GSSAPI SASL mechanisms

Updated under an hour ago (2026-10-21 08:20 UTC)

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It affects Apache Software Foundation Apache Tomcat. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Apache Software Foundation Apache Tomcat

Exploited in the last 30 days

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.

CVSS: 9.1 CRITICAL (v4.0, CISA ADP)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-304
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: apache
NVD analysis: Awaiting Analysis
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 20, 2026

Affected products

Affected products

Apache Software Foundation Apache Tomcat apache_software_foundation:apache_tomcat (from the name)	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; from 8.5.0 through 8.5.100; from 7.0.0 through 7.0.109	CNA record

References

https://lists.apache.org/thread.html/bl52b9go9ckoov8x4v3dt6rkm573cygdvendor-advisory
http://www.openwall.com/lists/oss-security/2026/10/20/26

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.