CVE-2026-43514: CWE-208 Observable Timing Discrepancy in Apache Software Foundation Apache Tomcat
Observable Timing Discrepancy vulnerability when comparing AJP secret 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.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-43514) involves a timing side-channel issue (CWE-208) in Apache Tomcat's handling of the AJP secret comparison. Affected versions include 7.0.0 through 7.0.109, 8.5.0 through 8.5.100, 9.0.0.M1 through 9.0.117, 10.1.0-M1 through 10.1.54, and 11.0.0-M1 through 11.0.21. The timing discrepancy could allow an attacker to observe differences in response times during secret comparison, potentially leaking sensitive information. Apache recommends upgrading to versions 11.0.22, 10.1.55, or 9.0.118 where this issue is fixed.
Potential Impact
The vulnerability allows attackers to gain information about the AJP secret through timing analysis, which could lead to further attacks if the secret is compromised. However, no known exploits are reported in the wild at this time. The impact is limited to the confidentiality of the AJP secret, which is critical for secure communication between Tomcat and front-end servers.
Mitigation Recommendations
A fix is available. Users should upgrade affected Apache Tomcat installations to version 11.0.22, 10.1.55, or 9.0.118 or later to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-43514: CWE-208 Observable Timing Discrepancy in Apache Software Foundation Apache Tomcat
Description
Observable Timing Discrepancy vulnerability when comparing AJP secret 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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-43514) involves a timing side-channel issue (CWE-208) in Apache Tomcat's handling of the AJP secret comparison. Affected versions include 7.0.0 through 7.0.109, 8.5.0 through 8.5.100, 9.0.0.M1 through 9.0.117, 10.1.0-M1 through 10.1.54, and 11.0.0-M1 through 11.0.21. The timing discrepancy could allow an attacker to observe differences in response times during secret comparison, potentially leaking sensitive information. Apache recommends upgrading to versions 11.0.22, 10.1.55, or 9.0.118 where this issue is fixed.
Potential Impact
The vulnerability allows attackers to gain information about the AJP secret through timing analysis, which could lead to further attacks if the secret is compromised. However, no known exploits are reported in the wild at this time. The impact is limited to the confidentiality of the AJP secret, which is critical for secure communication between Tomcat and front-end servers.
Mitigation Recommendations
A fix is available. Users should upgrade affected Apache Tomcat installations to version 11.0.22, 10.1.55, or 9.0.118 or later to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-05-01T16:22:01.182Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a034c88cbff5d8610fea6f2
Added to database: 5/12/2026, 3:51:36 PM
Last enriched: 5/12/2026, 4:06:28 PM
Last updated: 5/12/2026, 6:28:18 PM
Views: 8
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