CVE-2026-43512: CWE-592 DEPRECATED: Authentication Bypass Issues in Apache Software Foundation Apache Tomcat
DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication 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 before 7.0.0. Older unsupported versions any also be affect 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-2026-43512) involves authentication bypass issues in the digest authentication implementation of Apache Tomcat. It affects a wide range of versions from 7.0.0 up to 11.0.21. The flaw allows an attacker to bypass authentication without valid credentials, potentially leading to unauthorized access. The vulnerability is classified under CWE-592 (Authentication Bypass by Assumed-Immutable Data). The Apache Software Foundation has addressed this issue in versions 11.0.22, 10.1.55, and 9.0.118.
Potential Impact
Successful exploitation of this vulnerability can lead to complete compromise of the affected Apache Tomcat server, including unauthorized access to protected resources, full system compromise, and potential disruption of service. The CVSS score of 9.8 reflects critical impact on confidentiality, integrity, and availability. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Users should upgrade affected Apache Tomcat installations to versions 11.0.22, 10.1.55, or 9.0.118, which contain fixes for this authentication bypass vulnerability. No other mitigation or temporary workaround is indicated. Patch status is confirmed by the vendor advisory recommending these specific versions.
CVE-2026-43512: CWE-592 DEPRECATED: Authentication Bypass Issues in Apache Software Foundation Apache Tomcat
Description
DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication 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 before 7.0.0. Older unsupported versions any also be affect Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
CVSS v3.1
Score 9.8critical
Affected software
pkg:maven/org.apache.tomcat/tomcatRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-43512) involves authentication bypass issues in the digest authentication implementation of Apache Tomcat. It affects a wide range of versions from 7.0.0 up to 11.0.21. The flaw allows an attacker to bypass authentication without valid credentials, potentially leading to unauthorized access. The vulnerability is classified under CWE-592 (Authentication Bypass by Assumed-Immutable Data). The Apache Software Foundation has addressed this issue in versions 11.0.22, 10.1.55, and 9.0.118.
Potential Impact
Successful exploitation of this vulnerability can lead to complete compromise of the affected Apache Tomcat server, including unauthorized access to protected resources, full system compromise, and potential disruption of service. The CVSS score of 9.8 reflects critical impact on confidentiality, integrity, and availability. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Users should upgrade affected Apache Tomcat installations to versions 11.0.22, 10.1.55, or 9.0.118, which contain fixes for this authentication bypass vulnerability. No other mitigation or temporary workaround is indicated. Patch status is confirmed by the vendor advisory recommending these specific versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-05-01T16:19:22.016Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a034c88cbff5d8610fea6ec
Added to database: 05/12/2026, 15:51:36 UTC
Last enriched: 05/19/2026, 18:27:03 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 330
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