CVE-2026-21861

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-21861
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-21861.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-21861
Aliases
Published
2026-03-31T00:43:58.296Z
Modified
2026-04-10T05:38:34.479945Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
baserCMS: OS Command Injection Leading to Remote Code Execution (RCE)
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-78"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21861.json"
}
References

Affected packages

Git / github.com/baserproject/basercms

Affected ranges

Type
GIT
Repo
https://github.com/baserproject/basercms
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
4cab078c93054f55d8fb36990a7ec7550f443932
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "5.2.3"
        }
    ]
}

Affected versions

2.*
2.0.0
2.0.0-beta
2.0.1
2.0.2
2.0.3
2.1.0
2.1.2
3.*
3.0.0
3.0.1
3.0.2
3.0.3
3.0.4
3.0.5
3.0.5.1
3.0.6
3.0.6-beta
3.0.7
4.*
4.0.0
4.0.0-beta
4.0.6
4.0.7
4.1.0
4.1.0.1
4.1.1
4.1.2
4.2.2
4.2.4
4.3.0
4.3.3
4.3.5
4.3.6
4.3.7
4.3.7.1
4.4.0
4.4.1.1
4.4.2.1
4.4.3
4.4.4
4.4.6
4.4.8
4.5.0
4.5.1
4.5.2
4.6.0
4.6.1
4.6.1.1
4.6.2
4.7.0
4.7.2
4.7.3
4.7.5
5.*
5.0.0-beta1
5.0.0-beta2
5.0.0-beta3
5.0.0-beta4
5.1.1
5.1.3
5.1.4
5.1.5
5.1.6
5.2.0
5.2.1
5.2.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-21861.json"