Summary
Target
baserCMS 4.7.3 and earlier versions
Credits
島峰泰平＠三井物産セキュアディレクション株式会社
Impact
There is a Remote Code Execution (RCE) Vulnerability on the management system of baserCMS.
The application accepts file uploads without adequately restricting the file type or content. Typical impact: remote code execution if the uploaded file can be served and executed on the server.
CVE-2023-25654 has a CVSS score of 9.8 (Critical). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (4.7.5); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
Remediation advice
Update to the latest version of baserCMS
Frequently Asked Questions
- What is CVE-2023-25654? CVE-2023-25654 is a critical-severity unrestricted upload of dangerous file types vulnerability in baserproject/basercms (composer), affecting versions < 4.7.5. It is fixed in 4.7.5. The application accepts file uploads without adequately restricting the file type or content.
- How severe is CVE-2023-25654? CVE-2023-25654 has a CVSS score of 9.8 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of baserproject/basercms are affected by CVE-2023-25654? baserproject/basercms (composer) versions < 4.7.5 is affected.
- Is there a fix for CVE-2023-25654? Yes. CVE-2023-25654 is fixed in 4.7.5. Upgrade to this version or later.
- Is CVE-2023-25654 exploitable, and should I be worried? Whether CVE-2023-25654 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2023-25654 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2023-25654? Upgrade
baserproject/basercmsto 4.7.5 or later.