Vulnerability record · CVE-2021-41243 · published 26 November 2021

CVE-2021-41243: Basercms os command injection vulnerability

Basercms · Basercms

There is a Potential Zip Slip Vulnerability and OS Command Injection Vulnerability on the management system of baserCMS. Users with permissions to upload files may upload crafted zip files which may execute arbitrary commands on the host operating system. This is a vulnerability that needs to be addressed when the management system is used by an unspecified number of users. If you are eligible, please update to the new version as soon as possible.

8.8 CVSS 3.1 High EPSS 2.2% · top 18.4% CWE-78 · OS command injection

8.8CVSS 3.1 base score, v2 9.0

2.2%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

4References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Basercms Basercms

References

Link	Tags
https://github.com/baserproject/basercms/commit/9088b99c329d1faff3a2f1269f37b9a9d8d5f6ff	PatchThird Party Advisory
https://github.com/baserproject/basercms/security/advisories/GHSA-7rpc-9m88-cf9w	Third Party Advisory
https://github.com/baserproject/basercms/commit/9088b99c329d1faff3a2f1269f37b9a9d8d5f6ff	PatchThird Party Advisory
https://github.com/baserproject/basercms/security/advisories/GHSA-7rpc-9m88-cf9w	Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-41243), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.