ghsa-5mp6-jrq3-r938
CVSS 7.5 osv_maven
Description
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.
Timeline
- Published
- unknown
- Last Modified
- unknown
CVSS Details
CVSS details not available.
Affected Products
No product information available.
Weaknesses (CWE)
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-43513
- https://github.com/apache/tomcat/commit/4a90d3fa93988c447cd5bb7482f76ff70d7f15c2
- https://github.com/apache/tomcat/commit/6dd75beb55bd42fc5f78e929596b25018cd17717
- https://github.com/apache/tomcat/commit/83f3e51df7b87f5f6e626951c575ded1a512e8ef
- https://github.com/apache/tomcat
- https://lists.apache.org/thread/ytjcgldshj73lcnd1sh95od5hrghwogp
- https://tomcat.apache.org/security-10.html
- https://tomcat.apache.org/security-11.html
- https://tomcat.apache.org/security-9.html
- http://www.openwall.com/lists/oss-security/2026/05/12/9
Linked Vulnerabilities
No linked vulnerabilities found.
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"CVE-2026-43513"
],
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],
"github_reviewed": true,
"github_reviewed_at": "2026-05-18T20:31:54Z",
"nvd_published_at": "2026-05-12T16:16:18Z",
"severity": "HIGH"
},
"details": "Improper Handling of Case Sensitivity vulnerability in LockOutRealm in Apache Tomcat.\n\nThis 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.\nOlder unsupported versions may also be affected.\n\nUsers are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.",
"id": "GHSA-5mp6-jrq3-r938",
"modified": "2026-09-10T09:40:56.519009078Z",
"published": "2026-05-12T18:30:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43513"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/4a90d3fa93988c447cd5bb7482f76ff70d7f15c2"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/6dd75beb55bd42fc5f78e929596b25018cd17717"
},
{
"type": "WEB",
"url": "https://github.com/apache/tomcat/commit/83f3e51df7b87f5f6e626951c575ded1a512e8ef"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/tomcat"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread/ytjcgldshj73lcnd1sh95od5hrghwogp"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-10.html"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-11.html"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-9.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/05/12/9"
}
],
"schema_version": "1.9.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Apache Tomcat: LockOutRealm treats user names as case-sensitive"
}