Vulnerability Intelligence Report
Apache Tomcat: Digest authenticator will authenticate any unknown user
CVE-2026-43512
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.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:0.87%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-592 ↗CWE-592 DEPRECATED: Authentication Bypass Issues
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| 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), 0 < 7.0.0 (unknown) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.869%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Apache Software Foundation · Vendor · USA |
| Reserved | 2026-05-01T16:19:22 |
| Published | 2026-05-12T15:24:02 |
| Last Updated | 2026-05-14T19:53:34 |
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