CVE-2026-21861: baserCMS: OS Command Injection Leading to Remote Code Execution (RCE)
baserproject · basercms
Affected: baserproject basercms · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 83% of scored CVEs
DescriptionCVE.org
baserCMS is a website development framework. Prior to version 5.2.3, baserCMS contains an OS command injection vulnerability in the core update functionality. An authenticated administrator can execute arbitrary OS commands on the server due to improper handling of user-controlled input that is directly passed to exec() without sufficient validation or escaping. This issue has been patched in version 5.2.3.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- baserproject · basercms< 5.2.3
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Possible (1 to 10%). EPSS between 1% and 10%.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- baserproject
- Published
- March 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-21861 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.