GHSA-gcx9-497g-6cp6 BIT-tomcat-2026-65182 CVE-2026-65182
Apache Tomcat has an Improper Access Control, Incorrect Authorization vulnerability
Critical
Maven
- Severity
- 9.1 / 10
- Critical · CVSS 3.1
- Exploit chance (EPSS)
- 0.65%
- Chance of exploitation in the next 30 days. Higher than 51.32% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-284 Improper Access Control
- Fix
- Available
- 3 packages have a fixed version
Description
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.
Affected versions
Maven
| Package | Vulnerable | Fixed in |
|---|---|---|
| org.apache.tomcat.embed:tomcat-embed-core | >= 11.0.0-M1, < 11.0.25 |
11.0.25 |
| org.apache.tomcat.embed:tomcat-embed-core | >= 10.1.0-M1, < 10.1.58 |
10.1.58 |
| org.apache.tomcat.embed:tomcat-embed-core | >= 9.0.0-M1, < 9.0.121 |
9.0.121 |
| org.apache.tomcat.embed:tomcat-embed-core | >= 8.5.0, <= 8.5.100 |
No fix yet |
| org.apache.tomcat.embed:tomcat-embed-core | >= 7.0.0, <= 7.0.109 |
No fix yet |
| org.apache.tomcat:tomcat | >= 11.0.0-M1, < 11.0.25 |
11.0.25 |
| org.apache.tomcat:tomcat | >= 10.1.0-M1, < 10.1.58 |
10.1.58 |
| org.apache.tomcat:tomcat | >= 9.0.0-M1, < 9.0.121 |
9.0.121 |
| org.apache.tomcat:tomcat | >= 8.5.0, <= 8.5.100 |
No fix yet |
| org.apache.tomcat:tomcat | >= 7.0.0, <= 7.0.109 |
No fix yet |
| org.apache.tomcat:tomcat-catalina | >= 11.0.0-M1, < 11.0.25 |
11.0.25 |
| org.apache.tomcat:tomcat-catalina | >= 10.1.0-M1, < 10.1.58 |
10.1.58 |
| org.apache.tomcat:tomcat-catalina | >= 9.0.0-M1, < 9.0.121 |
9.0.121 |
| org.apache.tomcat:tomcat-catalina | >= 8.5.0, <= 8.5.100 |
No fix yet |
| org.apache.tomcat:tomcat-catalina | >= 7.0.0, <= 7.0.109 |
No fix yet |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
org.apache.tomcat.embed:tomcat-embed-core Maven → 11.0.25
- maven
<dependency><groupId>org.apache.tomcat.embed</groupId><artifactId>tomcat-embed-core</artifactId><version>11.0.25</version></dependency>- gradle
implementation("org.apache.tomcat.embed:tomcat-embed-core:11.0.25")
org.apache.tomcat:tomcat Maven → 11.0.25
- maven
<dependency><groupId>org.apache.tomcat</groupId><artifactId>tomcat</artifactId><version>11.0.25</version></dependency>- gradle
implementation("org.apache.tomcat:tomcat:11.0.25")
org.apache.tomcat:tomcat-catalina Maven → 11.0.25
- maven
<dependency><groupId>org.apache.tomcat</groupId><artifactId>tomcat-catalina</artifactId><version>11.0.25</version></dependency>- gradle
implementation("org.apache.tomcat:tomcat-catalina:11.0.25")
Severity breakdown
CVSS 3.1 9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Weakness
CWE-284: Improper Access Control
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
How to prevent it
- Architecture and Design, Operation: Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
- Architecture and Design: Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
References
Advisories
Other links
- github.com/apache/tomcat/commit/8bafd79a3b54684e80e9cb1bafd4746aede7d3f5
- github.com/apache/tomcat/commit/b2c56ec8f20c66773a1a813034ffcdb60841f1cf
- github.com/apache/tomcat/commit/b79752d2a8578d94743e2a95c50af297f780c0df
- lists.apache.org/thread/joosxvzc9b49ttj8lj0jw9mqt0ml767m
- tomcat.apache.org/security-10.html
- tomcat.apache.org/security-11.html
- tomcat.apache.org/security-9.html
- openwall.com/lists/oss-security/2026/08/26/1
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-69r9-qgr7-g2wj Apache Tomcat Missing Encryption of Sensitive Data vulnerability | High Known exploited | Also affects org.apache.tomcat:tomcat |
| GHSA-83qj-6fr2-vhqg Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT | Critical Known exploited | Also affects org.apache.tomcat.embed:tomcat-embed-core |
| GHSA-qppj-fm5r-hxr3 HTTP/2 Stream Cancellation Attack | Medium Known exploited | Also affects org.apache.tomcat.embed:tomcat-embed-core |
| GHSA-xjgh-84hx-56c5 Unrestricted Upload of File with Dangerous Type Apache Tomcat | High Known exploited | Also affects org.apache.tomcat.embed:tomcat-embed-core |
| GHSA-cw54-59pw-4g8c Apache Tomcat Improper Access Control vulnerability | Critical Known exploited | Also affects org.apache.tomcat:tomcat-catalina |
| CVE-2020-1938 Improper Privilege Management in Tomcat | Critical Known exploited | Also affects org.apache.tomcat.embed:tomcat-embed-core |
| GHSA-pjfr-qf3p-3q25 When running Apache Tomcat on Windows with HTTP PUTs enabled it was possible to upload a JSP file to the server | High Known exploited | Also affects org.apache.tomcat.embed:tomcat-embed-core |
| GHSA-h3x4-894j-xpx5 Apache Tomcat's FORM authentication process has an Incorrect Authorization vulnerability | Critical | Also affects org.apache.tomcat.embed:tomcat-embed-core |
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