CVE-2021-41243
There is a Potential Zip Slip Vulnerability and OS Command Injection Vulnerability on the management system of baserCMS.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.17% probability · 82th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Affected
- basercms/basercms
- Source
- security-advisories@github.com
EPSS 2.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/baserproject/basercms/commit/9088b99c329d1faff3a2f1269f37b9a9d8d5f6ffPatch, Third Party Advisory
- https://github.com/baserproject/basercms/security/advisories/GHSA-7rpc-9m88-cf9wThird Party Advisory
- https://github.com/baserproject/basercms/commit/9088b99c329d1faff3a2f1269f37b9a9d8d5f6ffPatch, Third Party Advisory
- https://github.com/baserproject/basercms/security/advisories/GHSA-7rpc-9m88-cf9wThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.