CVE-2026-101296
A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was…
- Risk score
- 70/100
- CVSS
- 9.1 v4.0
- Exploit chance (30 days)
- 0.7%
- Published
- 20 Oct 2026
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What to know
- What it is
- A missing critical step in authentication in Apache Tomcat allows attackers to authenticate without a password when a non-GSSAPI SASL authentication mechanism is used. This allows attackers to gain unauthorized access to the system.
- Affected
- {'products': ['Apache Tomcat'], 'packages': [], 'versions': ['11.0.0-M1 through 11.0.26', '10.1.0-M1 through 10.1.60', '9.0.0.M1 through 9.0.122', '8.5.0 through 8.5.100', '7.0.0 through 7.0.109']}
- Fix
- Upgrade to version 11.0.27, 10.1.61 or 9.0.123
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 9.1 critical
- Remotely exploitable without logging in
References
Original 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.
Last activity 20 Oct 2026. Patch Forecast updates every hour.