OS command injection in baserproject baserCMS
Priority LOW 36CWE-78Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-78.
Summary
baserCMS versions prior to 4.4.5 allows a remote attacker with an administrative privilege to execute arbitrary OS commands via unspecified vectors.
Why it matters now
EPSS 0.02475 84th percentileScored 2026-11-07
Fix Fixed baserCMS (baserCMS Users Community): 4.4.5baserproject/basercms (Packagist): 4.4.5
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| baserproject | baserCMS | before 4.4.5 | 4.4.5 | Patch available | CNA |
| — | baserproject/basercms (Packagist) | before 4.4.5 | 4.4.5 | Patch available | GHSA-g39q-f4rm-85x4 |
- baserCMS Vendorbaserproject Affected before 4.4.5 Fixed in 4.4.5 Patch available CNA
- baserproject/basercms (Packagist) Vendor— Affected before 4.4.5 Fixed in 4.4.5 Patch available GHSA-g39q-f4rm-85x4
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:basercms:basercms:*:*:*:*:*:*:*:* | before 4.4.5 | Vulnerable | baserproject |
- cpe:2.3:a:basercms:basercms:*:*:*:*:*:*:*:* Versions before 4.4.5 Vulnerable ·baserproject
Remediation
- Fix · CNA baserCMS (baserCMS Users Community) Fixed in 4.4.5
- Fix · GHSA-g39q-f4rm-85x4 baserproject/basercms (Packagist) Fixed in 4.4.5 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20682
- 2026-10-03 Alias added: GHSA-g39q-f4rm-85x4
References
More baserproject Basercms vulnerabilities
- TI-2026-17563 baserCMS: OS Command Injection Leading to Remote Code Execution (RCE) CVSS 3.1CRITICAL 9.1
- TI-2025-23967 baserCMS: unsafe File Upload Leading to Remote Code Execution (RCE) CVSS 3.1HIGH 8.7
- TI-2026-23707 baserCMS: Mail Form Acceptance Bypass via Public API CVSS 3.1MEDIUM 5.3
- TI-2023-10935 baserCMS File Uploader Remote Code Execution (RCE) vulnerability CVSS 3.1CRITICAL 9.8
- TI-2023-10936 baserCMS allows any file to be uploaded CVSS 3.1CRITICAL 9.8
- TI-2023-23483 baserCMS Code Injection Vulnerability in Mail Form Feature CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-20682 · CVE Program
- CVE-2021-20682 · NVD
- FIRST EPSS
- GHSA-g39q-f4rm-85x4 · GitHub Advisory Database · CC BY 4.0
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