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CVE-2026-44257— efw4.X: RCE via zipslip

Quick assessment

Affected
efwGrp efw4.X
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

EFW Framework是efw group开源的一个基于Ajax和服务端JavaScript的企业级Web开发框架。 EFW Framework 4.08.010之前版本存在命令注入漏洞，该漏洞源于FileManager.unZip未进行规范路径检查，可能导致路径遍历和任意命令执行。

AI Predicted 9.8 Difficulty: Easy EPSS 0.54% · P45

Affected Version Matrix 1

VendorProduct Version RangeStatus
efwGrp efw4.X < 4.08.010 affected
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I. Basic Information for CVE-2026-44257

Vulnerability Information
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Vulnerability Title
efw4.X: RCE via zipslip
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
EFW Framework 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
EFW Framework是efw group开源的一个基于Ajax和服务端JavaScript的企业级Web开发框架。 EFW Framework 4.08.010之前版本存在命令注入漏洞，该漏洞源于FileManager.unZip未进行规范路径检查，可能导致路径遍历和任意命令执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
efwGrp efw4.X < 4.08.010 -

II. Public POCs for CVE-2026-44257

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III. Intelligence Information for CVE-2026-44257

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Vendor Advisories for CVE-2026-44257 (1)

Same Patch Batch · efwGrp · 2026-05-12 · 4 CVEs total

CVE-2026-44260 8.1 HIGH efw4.X: readonly Flag Not Enforced Server-Side
CVE-2026-44259 4.6 MEDIUM efw4.X: Stored XSS via previewServlet
CVE-2026-44258 efw4.X: Path Traversal via Unchecked dst Parameter leads to Remote Code Execution

IV. Related Vulnerabilities

Same product: efw4.X
Same vendor: efwGrp
Same weakness: CWE-77

V. Comments for CVE-2026-44257

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