VDB
CVE-2026-43513
CVE-2026-43513
PUBLISHED
Improper Handling of Case Sensitivity vulnerability in LockOutRealm in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Older unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
EPSS 0.08% · 24.0th percentile
Risk Scores
EPSS Score
0.08%
24.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Tomcat | 10.1.0-M1, 9.0.0.M1, 8.5.0 |
Timeline
- May 12, 2026 CVE Published
- May 13, 2026 Security Advisory
- May 18, 2026 CVE Updated
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
- May 24, 2026 EPSS Score
- May 25, 2026 EPSS Score
- May 26, 2026 EPSS Score
References
- https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.118 advisory
- https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.55 advisory
- https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.22 advisory
- https://lists.apache.org/thread/ytjcgldshj73lcnd1sh95od5hrghwogp vendor-advisory
- http://www.openwall.com/lists/oss-security/2026/05/12/9 url
- https://nvd.nist.gov/vuln/detail/CVE-2026-43513 advisory