CVE-2026-68569
Improper Authentication vulnerability in Apache Tomcat meant that in some circumstances (e.g.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Improper Authentication vulnerability in Apache Tomcat meant that in some circumstances (e.g. CLIENT-CERT, SPNEGO) that a user would be authenticated even if the user did not exist in the DataSourceRealm. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120. 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 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 0.53% probability · 43th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- apache/tomcat
- Source
- security@apache.org
References
- https://lists.apache.org/thread/8robqo76q0osxgw0b5lcwgz0hcf9h4zcVendor Advisory, Mailing List
- http://www.openwall.com/lists/oss-security/2026/08/26/8Third Party Advisory, Mailing List
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.