CVE-2018-18830 json
Unrestricted Upload of File with Dangerous Type in mingsoft:ms-mcms
published 2018-10-30 8 y ago modified 2026-06-17 4 mo ago also GHSA-c7c7-xm8g-xm36 , EUVD-2018-0744
- cvss
- 9.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 68%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
1.21% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| GitHub | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | net.mingsoft:ms-mcms | <=4.6.5 |
no fix listed |
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
gitee.com
/mingSoft/MCMS/issues/IO0IQ
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2018-18830
advisory
-
gitee.com
/mingSoft/MCMS
package
-
github.com
/advisories/GHSA-c7c7-xm8g-xm36
advisory
Sources
- CVE List CVE-2018-18830
- GitHub Advisory GHSA-c7c7-xm8g-xm36
- NVD CVE-2018-18830
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