CVE-2025-55752

A directory traversal vulnerability in Apache Tomcat caused by improper URL normalization during request rewriting. When specific rewrite rules are used, an attacker could craft a malicious request to bypass access restrictions and reach protected directories such as /WEB-INF/ or /META-INF/. If HTTP PUT requests are also enabled, this flaw could allow the upload of malicious files, potentially leading to remote code execution.

This vulnerability is rated as Important rather than Critical because successful exploitation depends on specific, non-default configuration conditions. The flaw only becomes exploitable when both URL rewriting rules that modify the request path are in use and HTTP PUT requests are enabled — a feature typically restricted to administrative or trusted users. In standard Tomcat deployments, PUT is disabled or tightly controlled, and rewrite configurations rarely expose sensitive paths. Therefore, while the issue could theoretically lead to remote code execution, the limited attack surface and requirement for uncommon setup conditions significantly reduce its overall risk level.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

To reduced the risk, by disabling or strictly limiting the use of HTTP PUT requests to trusted, authenticated users only. Additionally, administrators should review and adjust URL rewrite rules to ensure they do not manipulate request paths in ways that could expose protected directories such as /WEB-INF/ or /META-INF/. Implementing strict access controls and monitoring for unexpected rewrite or upload behavior can further minimize potential exploitation.