CVE-2026-43514 Details
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.
A vulnerability exists in Apache Tomcat due to an observable timing discrepancy when comparing AJP secrets. This flaw allows an attacker on the local network to perform a timing attack to deduce the AJP secret. The vulnerability is present in Apache Tomcat versions 11.0.0-M1 prior to 11.0.21, 10.1.0-M1 prior to 10.1.54, 9.0.0-M1 prior to 9.0.117, 8.5.0 prior to 8.5.100, and 7.0.0 prior to 7.0.109. Older unsupported versions may also be affected.
Users are advised to upgrade to Apache Tomcat 11.0.22, 10.1.55, or 9.0.118.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 13, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/05/12/10 | CVE | Mailing ListThird Party Advisory |
| https://lists.apache.org/thread/2k654v5cq123npfsd1b2kk1y30owqb1m | [email protected] | Mailing ListVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-208 | Observable Timing Discrepancy | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| apache tomcat | >= 7.0.0, <= 7.0.109 >= 8.5.0, <= 8.5.100 >= 9.0.0, < 9.0.118 >= 10.1.0, < 10.1.55 >= 11.0.0, < 11.0.22 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 14, 2026 | Initial Analysis | [email protected] |
| May 13, 2026 | CVE Modified | CISA-ADP |
| May 12, 2026 | CVE Modified | CVE |
| May 12, 2026 | New CVE Received | [email protected] |