CVE-2026-43514— Apache Tomcat: AJP secret compared in non-constant time
Affected Version Matrix 6
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1≤ 11.0.21 | affected |
10.1.0-M1≤ 10.1.54 | affected | ||
9.0.0.M1≤ 9.0.117 | affected | ||
8.5.0≤ 8.5.100 | affected | ||
7.0.0≤ 7.0.109 | affected | ||
< 7.00 | unknown |
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I. Basic Information for CVE-2026-43514
Vulnerability Information
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Vulnerability Title
Apache Tomcat: AJP secret compared in non-constant time
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过时间差异性导致的信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apache Tomcat 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Tomcat是美国阿帕奇（Apache）基金会的一款轻量级Web应用服务器。用于实现对Servlet和JavaServer Page（JSP）的支持。 Apache Tomcat 11.0.0-M1至11.0.21版本、10.1.0-M1至10.1.54版本、9.0.0.M1至9.0.117版本、8.5.0至8.5.100版本和7.0.0至7.0.109版本存在安全漏洞，该漏洞源于比较AJP密钥时存在可观察的时间差异。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1 ~ 11.0.21 | - |
II. Public POCs for CVE-2026-43514
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Apache Software Foundation · 2026-05-12 · 7 CVEs total
| CVE-2026-41284 | Apache Tomcat: Unbounded read in WebDAV LOCK and PROPFIND handling | |
| CVE-2026-42498 | Apache Tomcat: WebSocket authentication header exposure | |
| CVE-2026-41293 | Apache Tomcat: HTTP/2 request headers not validated | |
| CVE-2026-43512 | Apache Tomcat: Digest authenticator will authenticate any unknown user | |
| CVE-2026-43513 | Apache Tomcat: LockOutRealm treats user names as case-sensitive | |
| CVE-2026-43515 | Apache Tomcat: Security constraints not correctly applied |
IV. Related Vulnerabilities
Same product: Apache Tomcat
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Apache Tomcat: Security constraints not correctly applied - CVE-2026-43513
Apache Tomcat: LockOutRealm treats user names as case-sensit - CVE-2026-43512
Apache Tomcat: Digest authenticator will authenticate any un - CVE-2026-41293
Apache Tomcat: HTTP/2 request headers not validated - CVE-2026-42498
Apache Tomcat: WebSocket authentication header exposure
Same vendor: Apache Software Foundation
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Apache Tomcat: Security constraints not correctly applied - CVE-2026-43513
Apache Tomcat: LockOutRealm treats user names as case-sensit - CVE-2026-43512
Apache Tomcat: Digest authenticator will authenticate any un
Same weakness: CWE-208
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V. Comments for CVE-2026-43514
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