CVE-2026-66422— Apache Tomcat: Servlet role references can bypass declarative role constraints
Quick assessment
Affected
Apache Software Foundation Apache Tomcat
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Apache Tomcat 中存在一个由于对 定义使用不当而导致的授权不当漏洞。该漏洞源于在 Realm 中错误地将 定义为角色别名，而正确的用法应仅限于通过 方法进行的角色检查。 此漏洞影响以下 Apache Tomcat 版本： 11.0.0-M1 至 11.0.24 10.1.0-M1 至 10.1.57 9.0.25 至 9.0.120 在创建 CVE 时，以下版本已达到生命周期终止（EOL），但已知仍受该漏洞影响： 8.5.46 至 8.5.100 7.0.97 至 7.0.109 其他不再受支持的版本也
Possible ATT&CK Techniques 1 AI
T1078 · Valid AccountsAffected Version Matrix 6
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1≤ 11.0.24 |
affected |
10.1.0-M1≤ 10.1.57 |
affected | ||
9.0.25≤ 9.0.120 |
affected | ||
8.5.46≤ 8.5.100 |
affected | ||
7.0.97≤ 7.0.109 |
affected | ||
< 7.0.97 |
unaffected |
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I. Basic Information for CVE-2026-66422
Vulnerability Information
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Vulnerability Title
Apache Tomcat: Servlet role references can bypass declarative role constraints
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Authorization vulnerability in Apache Tomcat cause by security-role-ref definitions being incorrectly used as role aliases within the Realm in additional to the correct usage with Request.isUserInRole().
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.25 through 9.0.120.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.46 through 8.5.100, from 7.0.97 through 7.0.109. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1 ~ 11.0.24 | - |
|
II. Public POCs for CVE-2026-66422
| # | POC Description | Source Link | Shenlong Link |
|---|
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Mailing List Discussions for CVE-2026-66422 (1)
Same Patch Batch · Apache Software Foundation · 2026-08-25 · 14 CVEs total
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| CVE-2026-53561 | Apache Hive: Unauthenticated authentication bypass in HiveServer2 HTTP SAML bearer-token v | |
| CVE-2026-55976 | Apache Hive: SSRF vulnerability in Hive Avro Serde due to Insufficient input validation on | |
| CVE-2026-49845 | Apache Hive: SQL Injection vulnerability in HiveMetaStore partition-name direct-SQL paths | |
| CVE-2026-65182 | Apache Tomcat: Bypass longest prefix security constraint | |
| CVE-2026-65183 | Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets | |
| CVE-2026-65637 | Apache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - CVE-2026-32990 fix in | |
| CVE-2026-65905 | Apache Tomcat: Limited replay attack possible with DIGEST authentication | |
| CVE-2026-65927 | Apache Tomcat: RewriteValve [N] restarts at the second rule and may bypass access control | |
| CVE-2026-68525 | Apache Tomcat: Redirect after FORM auth may bypass method specific constraints | |
| CVE-2026-68569 | Apache Tomcat: Principal lookup can fail open in some cases | |
| CVE-2026-68763 | Apache Tomcat: DoS via allocation leak in HTTP/2 backlog tracking when a stream is reset | |
| CVE-2026-73180 | Apache Tomcat: Authenticated WebSocket session survives end of HTTP session |
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V. Comments for CVE-2026-66422
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