CVE-2026-44257: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') in efwGrp efw4.X
efw4.X is an Enterprise Framework for Web. Prior to 4.08.010, efw.file.FileManager.unZip writes zip entries to disk using new File(baseDir, zipEntry.getName()) with no canonical-path check. An entry name such as ../../../pwned.jsp escapes the intended extraction directory and lands anywhere the Tomcat process can write — including the servlet context root. Combined with the framework's multipart /uploadServlet and an event that calls file.saveUploadFiles + FileManager.unZip, a remote attacker with no credentials drops a JSP webshell and executes arbitrary commands as the Tomcat user. This vulnerability is fixed in 4.08.010.
AI Analysis
Technical Summary
efw4.X, an Enterprise Framework for Web, has a command injection vulnerability (CWE-77) due to improper neutralization of special elements in file paths during zip extraction. Specifically, the FileManager.unZip method writes zip entries to disk without canonical-path checks, enabling path traversal via crafted zip entry names like '../../../pwned.jsp'. When combined with the framework's multipart upload servlet and an event invoking file.saveUploadFiles plus FileManager.unZip, a remote unauthenticated attacker can drop a JSP webshell and execute arbitrary commands as the Tomcat user. This vulnerability is resolved in efw4.X version 4.08.010.
Potential Impact
An unauthenticated remote attacker can exploit this vulnerability to write arbitrary files anywhere the Tomcat process has write permissions, including the servlet context root. This allows the attacker to deploy a JSP webshell and execute arbitrary commands with the privileges of the Tomcat user, leading to full system compromise within the application context.
Mitigation Recommendations
This vulnerability is fixed in efw4.X version 4.08.010. Users should upgrade to version 4.08.010 or later to remediate this issue. Patch status is not explicitly confirmed in the vendor advisory, but the fix is stated to be included in version 4.08.010. No other mitigation guidance is provided.
CVE-2026-44257: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') in efwGrp efw4.X
Description
efw4.X is an Enterprise Framework for Web. Prior to 4.08.010, efw.file.FileManager.unZip writes zip entries to disk using new File(baseDir, zipEntry.getName()) with no canonical-path check. An entry name such as ../../../pwned.jsp escapes the intended extraction directory and lands anywhere the Tomcat process can write — including the servlet context root. Combined with the framework's multipart /uploadServlet and an event that calls file.saveUploadFiles + FileManager.unZip, a remote attacker with no credentials drops a JSP webshell and executes arbitrary commands as the Tomcat user. This vulnerability is fixed in 4.08.010.
CVSS v4.0
Score 9.3critical
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
efw4.X, an Enterprise Framework for Web, has a command injection vulnerability (CWE-77) due to improper neutralization of special elements in file paths during zip extraction. Specifically, the FileManager.unZip method writes zip entries to disk without canonical-path checks, enabling path traversal via crafted zip entry names like '../../../pwned.jsp'. When combined with the framework's multipart upload servlet and an event invoking file.saveUploadFiles plus FileManager.unZip, a remote unauthenticated attacker can drop a JSP webshell and execute arbitrary commands as the Tomcat user. This vulnerability is resolved in efw4.X version 4.08.010.
Potential Impact
An unauthenticated remote attacker can exploit this vulnerability to write arbitrary files anywhere the Tomcat process has write permissions, including the servlet context root. This allows the attacker to deploy a JSP webshell and execute arbitrary commands with the privileges of the Tomcat user, leading to full system compromise within the application context.
Mitigation Recommendations
This vulnerability is fixed in efw4.X version 4.08.010. Users should upgrade to version 4.08.010 or later to remediate this issue. Patch status is not explicitly confirmed in the vendor advisory, but the fix is stated to be included in version 4.08.010. No other mitigation guidance is provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-05T16:33:55.844Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a0399d6cbff5d86101a8915
Added to database: 05/12/2026, 21:21:26 UTC
Last enriched: 05/20/2026, 18:25:11 UTC
Last updated: 06/29/2026, 08:51:20 UTC
Views: 105
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