What’s Vulnerable › Vulnerabilities

CVE-2020-15277: Remote Code Execution in baserCMS

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-30 · updated 2026-06-17
• Weakness: CWE-434

Description

baserCMS before version 4.4.1 is affected by Remote Code Execution (RCE). Code may be executed by logging in as a system administrator and uploading an executable script file such as a PHP file. The Edit template component is vulnerable. The issue is fixed in version 4.4.1.

Affected products

• baserproject basercms: from 4.0.0 before 4.4.1 — fixed in 4.4.1

How to fix

Upgrade to a fixed version: baserproject basercms 4.4.1. Check the vendor advisory for mitigations.

References

• https://basercms.net/security/20201029
• https://github.com/baserproject/basercms/commit/bb027c3967b0430adcff2d2fedbc23d39077563b
• https://github.com/baserproject/basercms/security/advisories/GHSA-6fmv-q269-55cw
• https://basercms.net/security/20201029
• https://github.com/baserproject/basercms/commit/bb027c3967b0430adcff2d2fedbc23d39077563b
• https://github.com/baserproject/basercms/security/advisories/GHSA-6fmv-q269-55cw

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