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Vulnerability DatabaseCVE-2026-21861

CVE-2026-21861: 
PHP vulnerability analysis and mitigation

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.

Source: NVD

Related PHP vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

GHSA-8q4h-8crm-5cvcHIGH8.9
  • PHPPHP
  • studio-42/elfinder
NoYesApr 17, 2026
CVE-2026-41143HIGH8.8
  • PHPPHP
  • yeswiki/yeswiki
NoYesApr 18, 2026
GHSA-qrr6-mg7r-m243HIGH7.8
  • PHPPHP
  • phpunit/phpunit
NoYesApr 18, 2026
CVE-2026-40479MEDIUM5.4
  • PHPPHP
  • kimai/kimai
NoYesApr 17, 2026
CVE-2026-40486MEDIUM4.3
  • PHPPHP
  • kimai/kimai
NoYesApr 17, 2026

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