$ cve CVE-2018-11091 JSON

CVE-2018-11091

9.9

CRITICAL · CVSS 3.1 · EPSS 3.7% (pctl 90)

In your normal cycle

Critical by CVSS (9.9), but no sign of active exploitation.

Description

An issue was discovered in MyBiz MyProcureNet 5.0.0. A malicious file can be uploaded to the webserver by an attacker. It is possible for an attacker to upload a script to issue operating system commands. This vulnerability occurs because an attacker is able to adjust the "HiddenFieldControlCustomWhiteListedExtensions" parameter and add arbitrary extensions to the whitelist during the upload. For instance, if the extension .asp is added to the "HiddenFieldControlCustomWhiteListedExtensions" parameter, the server accepts "secctest.asp" as a legitimate file. Hence malicious files can be uploaded in order to execute arbitrary commands to take over the server.

Scoring

CVSS	9.9 (CRITICAL, v3.1)
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS	3.75% — more likely to be exploited than 90% of all CVEs
Weakness	CWE-434
On CISA KEV	no
Public exploit	none known
Published	2018-05-14
Last modified	2026-06-17

Affected (1)

Vendor	Product
mybiz	myprocurenet

References

→ the Explorer · watch your stack · NVD