CVE-2020-15159
baserCMS 4.3.6 and earlier is affected by Cross Site Scripting (XSS) and Remote Code Execution (RCE).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
baserCMS 4.3.6 and earlier is affected by Cross Site Scripting (XSS) and Remote Code Execution (RCE). This may be executed by logging in as a system administrator and uploading an executable script file such as a PHP file.The affected components are ThemeFilesController.php and UploaderFilesController.php. This is fixed in version 4.3.7.
- CVSS 3.1
- 7.6 HIGHCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
- EPSS
- 2.15% probability · 82th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- basercms/basercms
- Source
- security-advisories@github.com
EPSS 2.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://basercms.net/security/20200827Vendor Advisory
- https://github.com/baserproject/basercms/commit/16a7b3cd09a0ca355474119c76897eac2034a66dPatch, Third Party Advisory
- https://github.com/baserproject/basercms/security/advisories/GHSA-673x-f5wx-fxpwPatch, Third Party Advisory
- https://basercms.net/security/20200827Vendor Advisory
- https://github.com/baserproject/basercms/commit/16a7b3cd09a0ca355474119c76897eac2034a66dPatch, Third Party Advisory
- https://github.com/baserproject/basercms/security/advisories/GHSA-673x-f5wx-fxpwPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.