CVE-2021-39136
Cross-site scripting vulnerability in file upload
Description
There is a cross-site scripting vulnerability in file upload on the management system of baserCMS. This is a vulnerability that needs to be addressed when the management system is used by an unspecified number of users. If you are eligible, please update to the new version as soon as possible. ### Target baserCMS 4.5.1 and earlier versions ### Vulnerability Execution of malicious JavaScript code may alter the display of the page or leak cookie information. ### Countermeasures Update to the latest version of baserCMS Please refer to the next page for details. https://basercms.net/security/JVN_14134801
How to fix CVE-2021-39136
To remediate CVE-2021-39136, upgrade the affected package to a fixed version below.
- —upgrade to 4.5.1 or later
Is CVE-2021-39136 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 4.5.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |