AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

Apache Tomcat: attacker could authenticate without providing the correct

Apache Software Foundation

CVE-2026-101296 · Published Oct 20, 2026 · updated Nov 9, 2026

Critical9.1
No fix yet

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 versions

PackageAffectedFixed in
Apache Tomcat
Product
>= 11.0.0-M1, <= 11.0.26No fix yet
>= 10.1.0-M1, <= 10.1.60No fix yet
>= 9.0.0.M1, <= 9.0.122No fix yet
>= 8.5.0, <= 8.5.100No fix yet
Details and references
CVSS 4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Severity from
CISA (its enrichment of the CVE record)
Weakness
CWE-304

More Apache Software Foundation advisories

All Apache Software Foundation