CVE-2018-18830
highpriority · track · 39EPSS 0.012 · 68 %ileEUUSEPSS · scored 2026-10-27
An issue was discovered in com\mingsoft\basic\action\web\FileAction.java in MCMS 4.6.5. Since the upload interface does not verify the user login status, you can use this interface to upload files without setting a cookie. First, start an upload of JSP code with a .png filename, and then intercept the data packet. In the name parameter, change the suffix to jsp. In the response, the server returns the storage path of the file, which can be accessed to execute arbitrary JSP code.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8
weaknesses
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affected products (3)
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advisories (1)
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- GHSA-c7c7-xm8g-xm36Unrestricted Upload of File with Dangerous Type in mingsoft:ms-mcms2018-11-01ghsa · osvUS
An issue was discovered in com\mingsoft\basic\action\web\FileAction.java in MCMS 4.6.5. Since the upload interface does not verify the user login status, you can use this interface to upload files without setting a cookie. First, start an upload of JSP code with a .png filename, and then intercept the data packet. In the name parameter, change the suffix to jsp. In the response, the server returns the storage path of the file, which can be accessed to execute arbitrary JSP code.
also known as (3)
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sources
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references (3)
External citations — patches, advisories, analysis.
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