CVE-2025-46701
tomcat: Apache Tomcat: Security constraint bypass for CGI scripts
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 30, 2025
Updated · September 25, 2026
Description
A flaw was found in the CGI servlet component of Apache Tomcat. This vulnerability allows a security constraint bypass via improper handling of case sensitivity in the pathInfo component of a URI mapped to the CGI servlet.
Statement
This vulnerability is rated Moderate rather than Important due to several limiting technical factors that reduce its overall impact and exploitability. Firstly, the flaw only manifests on case-insensitive file systems (e.g., Windows NTFS or macOS HFS+), which are less common in production-grade Tomcat deployments, most of which run on case-sensitive Linux file systems. Secondly, the bypass only occurs when security constraints are defined specifically on the pathInfo portion of URLs mapped to the CGI servlet — a relatively uncommon and niche configuration in modern Tomcat-based applications, where URL-based access control tends to use more direct patterns or broader filters. Additionally, successful exploitation does not lead to remote code execution or denial of service, but rather circumvents access control under specific conditions.
CVSS score applicability
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
Mitigation is either unavailable or does not meet Red Hat Product Security standards for usability, deployment, applicability, or stability.
CVSS / CWE
CVSS 3.1 · 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE-178 · Improper Handling of Case Sensitivity