Relative Path Traversal vulnerability in Apache Tomcat.
The fix for bug 60013 introduced a regression where the rewritten URL was normalized before it was decoded. This introduced the possibility that, for rewrite rules that rewrite query parameters to the URL, an attacker could manipulate the request URI to bypass security constraints including the protection for /WEB-INF/ and /META-INF/. If PUT requests were also enabled then malicious files could be uploaded leading to remote code execution. PUT requests are normally limited to trusted users and it is considered unlikely that PUT requests would be enabled in conjunction with a rewrite that manipulated the URI.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.10, from 10.1.0-M1 through 10.1.44, from 9.0.0.M11 through 9.0.108.
The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.6 though 8.5.100. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.11 or later, 10.1.45 or later or 9.0.109 or later, which fix the issue.
| Software | From | Fixed in |
|---|---|---|
org.apache.tomcat / tomcat
|
11.0.0-M1 | 11.0.11 |
org.apache.tomcat / tomcat
|
10.1.0-M1 | 10.1.45 |
org.apache.tomcat / tomcat-catalina
|
11.0.0-M1 | 11.0.11 |
org.apache.tomcat / tomcat-catalina
|
10.1.0-M1 | 10.1.45 |
org.apache.tomcat.embed / tomcat-embed-core
|
11.0.0-M1 | 11.0.11 |
org.apache.tomcat.embed / tomcat-embed-core
|
10.1.0-M1 | 10.1.45 |
org.apache.tomcat / tomcat
|
9.0.0-M11 | 9.0.109 |
org.apache.tomcat / tomcat-catalina
|
9.0.0-M11 | 9.0.109 |
org.apache.tomcat.embed / tomcat-embed-core
|
9.0.0-M11 | 9.0.109 |
| apache / tomcat | 8.5.6 | 8.5.100.x |
| apache / tomcat | 9.0.1 | 9.0.109 |
| apache / tomcat | 10.0.0 | 10.0.27 |
| apache / tomcat | 10.1.0 | 10.1.45 |
| apache / tomcat | 11.0.0 | 11.0.11 |
| apache / tomcat | 9.0.0 | 9.0.0.x |
| apache / tomcat | 9.0.0-milestone11 | 9.0.0-milestone11.x |
| apache / tomcat | 9.0.0-milestone12 | 9.0.0-milestone12.x |
| apache / tomcat | 9.0.0-milestone13 | 9.0.0-milestone13.x |
| apache / tomcat | 9.0.0-milestone14 | 9.0.0-milestone14.x |
| apache / tomcat | 9.0.0-milestone15 | 9.0.0-milestone15.x |
| apache / tomcat | 9.0.0-milestone16 | 9.0.0-milestone16.x |
| apache / tomcat | 9.0.0-milestone17 | 9.0.0-milestone17.x |
| apache / tomcat | 9.0.0-milestone18 | 9.0.0-milestone18.x |
| apache / tomcat | 9.0.0-milestone19 | 9.0.0-milestone19.x |
| apache / tomcat | 9.0.0-milestone20 | 9.0.0-milestone20.x |
| apache / tomcat | 9.0.0-milestone21 | 9.0.0-milestone21.x |
| apache / tomcat | 9.0.0-milestone22 | 9.0.0-milestone22.x |
| apache / tomcat | 9.0.0-milestone23 | 9.0.0-milestone23.x |
| apache / tomcat | 9.0.0-milestone24 | 9.0.0-milestone24.x |
| apache / tomcat | 9.0.0-milestone25 | 9.0.0-milestone25.x |
| apache / tomcat | 9.0.0-milestone26 | 9.0.0-milestone26.x |
| apache / tomcat | 9.0.0-milestone27 | 9.0.0-milestone27.x |
org.apache.tomcat / tomcat
|
8.5.6 | 8.5.100.x |
org.apache.tomcat / tomcat-catalina
|
8.5.6 | 8.5.100.x |
org.apache.tomcat.embed / tomcat-embed-core
|
8.5.6 | 8.5.100.x |
A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.
A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.
Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.
Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.
SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.