CVE-2026-34486: Apache Tomcat Apache Tomcat Missing Encryption Of Vulnerability

HIGH
Advisory Identifier: GHSA-69r9-qgr7-g2wj
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CVSS 7.5
CWE-311
Published
Advisory Summary

CVE-2026-34486 is a HIGH (CVSS 7.5) apache tomcat missing encryption of vulnerability (CWE-311: Missing Encryption of Sensitive Data) affecting Apache Tomcat libraries in the Maven ecosystem. The issue involves apache tomcat missing encryption of sensitive data vulnerability. Remediation is available by upgrading affected packages to version 11.0.21, 10.1.54, 9.0.117.

CVE-2026-34486 at a Glance

CVE Identifier CVE-2026-34486
GHSA Identifier GHSA-69r9-qgr7-g2wj
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-311: Missing Encryption of Sensitive Data
Affected Product Apache Tomcat
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-34486

To remediate this vulnerability, upgrade all affected Apache Tomcat dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.apache.tomcat:tomcat-tribes fixed: 11.0.21 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat-tribes</artifactId>
    <version>11.0.21</version>
</dependency>
org.apache.tomcat:tomcat-tribes fixed: 10.1.54 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat-tribes</artifactId>
    <version>10.1.54</version>
</dependency>
org.apache.tomcat:tomcat-tribes fixed: 9.0.117 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat-tribes</artifactId>
    <version>9.0.117</version>
</dependency>
org.apache.tomcat:tomcat fixed: 11.0.21 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat</artifactId>
    <version>11.0.21</version>
</dependency>
org.apache.tomcat:tomcat fixed: 10.1.54 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat</artifactId>
    <version>10.1.54</version>
</dependency>
org.apache.tomcat:tomcat fixed: 9.0.117 
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat</artifactId>
    <version>9.0.117</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.apache.tomcat

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-34486, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.tomcat

Analyze the terminal output to locate any version of Apache Tomcat in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 11.0.21), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.tomcat command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-311: Missing Encryption of Sensitive Data, where the product does not encrypt sensitive or critical information before storage or transmission. In Apache Tomcat, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor. This issue affects Apache Tomcat: 11.0.20, 10.1.53, 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.

CVE-2026-34486 Affected Apache Tomcat Versions

6 component(s)
Fixed Versions:
11.0.2110.1.549.0.117
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.tomcat:tomcat-tribes
maven/org.apache.tomcat/tomcat-tribes
Maven
≥ 11.0.20
< 11.0.21
All 1 versions
11.0.20
11.0.21
org.apache.tomcat:tomcat-tribes
maven/org.apache.tomcat/tomcat-tribes
Maven
≥ 10.1.53
< 10.1.54
All 1 versions
10.1.53
10.1.54
org.apache.tomcat:tomcat-tribes
maven/org.apache.tomcat/tomcat-tribes
Maven
≥ 9.0.116
< 9.0.117
All 1 versions
9.0.116
9.0.117
org.apache.tomcat:tomcat
maven/org.apache.tomcat/tomcat
Maven
≥ 11.0.20
< 11.0.21
All 1 versions
11.0.20
11.0.21
org.apache.tomcat:tomcat
maven/org.apache.tomcat/tomcat
Maven
≥ 10.1.53
< 10.1.54
All 1 versions
10.1.53
10.1.54
org.apache.tomcat:tomcat
maven/org.apache.tomcat/tomcat
Maven
≥ 9.0.116
< 9.0.117
All 1 versions
9.0.116
9.0.117

References

NVD — CVE-2026-34486 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34486
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/1fab40ccc752e22639eccfe290d5624afad7eccd
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/55f3eb9148233054fccfdf761141c6894a050be1
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/776e12b3e2b0b4507b8a3b62c187ceb0b74bf418
Apache Tomcat Source Repository REPOSITORY
https://github.com/apache/tomcat
lists.apache.org/thread/9510k5p5zdvt... WEB
https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly
Apache Tomcat Security Information SECURITY
https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.54
Apache Tomcat Security Information SECURITY
https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.21
Apache Tomcat Security Information SECURITY
https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.117
www.herodevs.com/vulnerability-direc... WEB
https://www.herodevs.com/vulnerability-directory/cve-2026-34486
www.vicarius.io/vsociety/posts/cve-... WEB
https://www.vicarius.io/vsociety/posts/cve-2026-34486-detection-script-rce-on-apache-tomcat
www.vicarius.io/vsociety/posts/cve-... WEB
https://www.vicarius.io/vsociety/posts/cve-2026-34486-mitigation-script-rce-on-apache-tomcat

Frequently Asked Questions

What is CVE-2026-34486?
CVE-2026-34486 is a security vulnerability in Apache Tomcat involving Apache Tomcat Missing Encryption of Sensitive Data vulnerability under CWE-311: Missing Encryption of Sensitive Data.
Which Apache Tomcat versions are affected?
Affected versions include releases prior to 11.0.21, 10.1.54, 9.0.117 across affected packages: org.apache.tomcat:tomcat-tribes, org.apache.tomcat:tomcat.
What version fixes CVE-2026-34486?
Upgrading to 11.0.21, 10.1.54, 9.0.117 (or the latest patched release for your respective branch) resolves the vulnerability.
Is tomcat-tribes affected?
Yes, org.apache.tomcat:tomcat-tribes is affected in releases prior to 11.0.21, 10.1.54, 9.0.117. Upgrade your dependency to 11.0.21, 10.1.54, 9.0.117 or later.
Is tomcat affected?
Yes, org.apache.tomcat:tomcat is affected in releases prior to 11.0.21, 10.1.54, 9.0.117. Upgrade your dependency to 11.0.21, 10.1.54, 9.0.117 or later.
What is the CVSS score of CVE-2026-34486?
CVE-2026-34486 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2026-34486?
CVE-2026-34486 is classified under CWE-311: Missing Encryption of Sensitive Data (The product does not encrypt sensitive or critical information before storage or transmission.).
How can I check Maven dependencies for CVE-2026-34486?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.tomcat'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-69r9-qgr7-g2wj",
  "modified" : "2026-06-08T23:28:55Z",
  "published" : "2026-04-09T21:31:30Z",
  "aliases" : [ "CVE-2026-34486" ],
  "summary" : "Apache Tomcat Missing Encryption of Sensitive Data vulnerability",
  "details" : "Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor.\n\nThis issue affects Apache Tomcat: 11.0.20, 10.1.53, 9.0.116.\n\nUsers are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat:tomcat-tribes"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "11.0.20"
      }, {
        "fixed" : "11.0.21"
      } ]
    } ],
    "versions" : [ "11.0.20" ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat:tomcat-tribes"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
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      }, {
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      } ]
    } ],
    "versions" : [ "10.1.53" ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat:tomcat-tribes"
    },
    "ranges" : [ {
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    } ],
    "versions" : [ "9.0.116" ]
  }, {
    "package" : {
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    },
    "ranges" : [ {
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      }, {
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      } ]
    } ],
    "versions" : [ "11.0.20" ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
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    },
    "ranges" : [ {
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      "events" : [ {
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      }, {
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      } ]
    } ],
    "versions" : [ "10.1.53" ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.tomcat:tomcat"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.116"
      }, {
        "fixed" : "9.0.117"
      } ]
    } ],
    "versions" : [ "9.0.116" ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-34486"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/tomcat/commit/1fab40ccc752e22639eccfe290d5624afad7eccd"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/tomcat/commit/55f3eb9148233054fccfdf761141c6894a050be1"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/tomcat/commit/776e12b3e2b0b4507b8a3b62c187ceb0b74bf418"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/tomcat"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly"
  }, {
    "type" : "WEB",
    "url" : "https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.54"
  }, {
    "type" : "WEB",
    "url" : "https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.21"
  }, {
    "type" : "WEB",
    "url" : "https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.117"
  }, {
    "type" : "WEB",
    "url" : "https://www.herodevs.com/vulnerability-directory/cve-2026-34486"
  }, {
    "type" : "WEB",
    "url" : "https://www.vicarius.io/vsociety/posts/cve-2026-34486-detection-script-rce-on-apache-tomcat"
  }, {
    "type" : "WEB",
    "url" : "https://www.vicarius.io/vsociety/posts/cve-2026-34486-mitigation-script-rce-on-apache-tomcat"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-311" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-10T22:07:50Z",
    "nvd_published_at" : "2026-04-09T20:16:25Z"
  }
}