CVE-2026-65182 — Vulnerability in...
CRITICAL
Apache Tomcat has an Improper Access Control, Incorrect Authorization vulnerability
Published August 26, 2026Updated September 11, 2026Source: osv
Summary
Improper Access Control, Incorrect Authorization vulnerability in Apache Tomcat leads to security constraint bypass if a constraint for a longer path is specified before a more restrictive constraint for a shorter sub-path.
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, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.
Users are recommended to upgrade to version 11.0.25, 10.1.58, 9.0.121, which fixes the issue.
Advisory Timeline
- First published August 26, 2026 (47 days ago).
- Last revised September 11, 2026 — 16 days after initial publication.
Remediation
Upgrade to the fixed version using your package manager.
Maven
Update org.apache.tomcat:tomcat-catalina to 10.1.58 or later<!-- Update pom.xml dependency version to 10.1.58 for org.apache.tomcat:tomcat-catalina -->
Maven
Update org.apache.tomcat.embed:tomcat-embed-core to 9.0.121 or later<!-- Update pom.xml dependency version to 9.0.121 for org.apache.tomcat.embed:tomcat-embed-core -->
Maven
Update org.apache.tomcat:tomcat to 10.1.58 or later<!-- Update pom.xml dependency version to 10.1.58 for org.apache.tomcat:tomcat -->
Maven
Update org.apache.tomcat:tomcat to 9.0.121 or later<!-- Update pom.xml dependency version to 9.0.121 for org.apache.tomcat:tomcat -->
Maven
Update org.apache.tomcat:tomcat to 11.0.25 or later<!-- Update pom.xml dependency version to 11.0.25 for org.apache.tomcat:tomcat -->
Maven
Update org.apache.tomcat:tomcat-catalina to 9.0.121 or later<!-- Update pom.xml dependency version to 9.0.121 for org.apache.tomcat:tomcat-catalina -->
Maven
Update org.apache.tomcat.embed:tomcat-embed-core to 11.0.25 or later<!-- Update pom.xml dependency version to 11.0.25 for org.apache.tomcat.embed:tomcat-embed-core -->
Maven
Update org.apache.tomcat:tomcat-catalina to 11.0.25 or later<!-- Update pom.xml dependency version to 11.0.25 for org.apache.tomcat:tomcat-catalina -->
Maven
Update org.apache.tomcat.embed:tomcat-embed-core to 10.1.58 or later<!-- Update pom.xml dependency version to 10.1.58 for org.apache.tomcat.embed:tomcat-embed-core -->
After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.
Affected Packages (15)
Affects 1 ecosystem: maven (3).
| Package | Ecosystem | Affected | Fixed In |
|---|---|---|---|
| org.apache.tomcat.embed:tomcat-embed-core | maven | 8.5.0, 8.5.100, 8.5.11, 8.5.12 (+81 more) | Range-based data available |
| org.apache.tomcat:tomcat-catalina | maven | 8.5.0, 8.5.100, 8.5.11, 8.5.12 (+81 more) | Range-based data available |
| org.apache.tomcat:tomcat-catalina | maven | 10.1.0, 10.1.0-M1, 10.1.0-M10, 10.1.0-M11 (+60 more) | 10.1.58 |
| org.apache.tomcat.embed:tomcat-embed-core | maven | 9.0.0.M1, 9.0.0.M10, 9.0.0.M11, 9.0.0.M13 (+115 more) | 9.0.121 |
| org.apache.tomcat:tomcat | maven | 10.1.0, 10.1.0-M1, 10.1.0-M10, 10.1.0-M11 (+60 more) | 10.1.58 |
| org.apache.tomcat:tomcat | maven | 9.0.0.M1, 9.0.0.M10, 9.0.0.M11, 9.0.0.M13 (+115 more) | 9.0.121 |
| org.apache.tomcat:tomcat | maven | 7.0.100, 7.0.103, 7.0.104, 7.0.105 (+48 more) | Range-based data available |
| org.apache.tomcat:tomcat | maven | 11.0.0, 11.0.0-M1, 11.0.0-M10, 11.0.0-M11 (+41 more) | 11.0.25 |
| org.apache.tomcat:tomcat-catalina | maven | 9.0.0.M1, 9.0.0.M10, 9.0.0.M11, 9.0.0.M13 (+115 more) | 9.0.121 |
| org.apache.tomcat.embed:tomcat-embed-core | maven | 7.0.0, 7.0.100, 7.0.103, 7.0.104 (+72 more) | Range-based data available |
| org.apache.tomcat:tomcat | maven | 8.5.0, 8.5.100, 8.5.11, 8.5.12 (+81 more) | Range-based data available |
| org.apache.tomcat.embed:tomcat-embed-core | maven | 11.0.0, 11.0.0-M1, 11.0.0-M10, 11.0.0-M11 (+41 more) | 11.0.25 |
| org.apache.tomcat:tomcat-catalina | maven | 7.0.0, 7.0.100, 7.0.103, 7.0.104 (+72 more) | Range-based data available |
| org.apache.tomcat:tomcat-catalina | maven | 11.0.0, 11.0.0-M1, 11.0.0-M10, 11.0.0-M11 (+41 more) | 11.0.25 |
| org.apache.tomcat.embed:tomcat-embed-core | maven | 10.1.0, 10.1.0-M1, 10.1.0-M10, 10.1.0-M11 (+60 more) | 10.1.58 |
Vulnerability Classification
Common Weakness Enumeration (CWE) identifiers for this vulnerability type.
- CWE-284
CVSS Score Breakdown
What the CVSS (Common Vulnerability Scoring System) 9.1 score means for each attack dimension.
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-65182ADVISORY
- https://github.com/apache/tomcat/commit/8bafd79a3b54684e80e9cb1bafd4746aede7d3f5WEB
- https://github.com/apache/tomcat/commit/b2c56ec8f20c66773a1a813034ffcdb60841f1cfWEB
- https://github.com/apache/tomcat/commit/b79752d2a8578d94743e2a95c50af297f780c0dfWEB
- https://lists.apache.org/thread/joosxvzc9b49ttj8lj0jw9mqt0ml767mWEB
- https://tomcat.apache.org/security-10.htmlWEB
- https://tomcat.apache.org/security-11.htmlWEB
- https://tomcat.apache.org/security-9.htmlWEB
- https://www.openwall.com/lists/oss-security/2026/08/26/1WEB
Frequently Asked Questions
- What is CVE-2026-65182?
- Apache Tomcat has an Improper Access Control, Incorrect Authorization vulnerability This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.1/10).
- How do I check if my project is affected by CVE-2026-65182?
- CVE-2026-65182 affects org.apache.tomcat.embed:tomcat-embed-core, org.apache.tomcat:tomcat-catalina and org.apache.tomcat:tomcat. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-65182 and 200,000+ other known vulnerabilities.
Severity & Exploitability
CVSS Score
9.1
Exploitation is straightforward and causes maximum impact. Patch immediately.
Also Known As
GHSA-gcx9-497g-6cp6
BIT-tomcat-2026-65182
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