{"id":"CVE-2026-30877","aliases":["EUVD-2026-17259","GHSA-m9g7-rgfc-jcm7"],"status":"published","title":"baserCMS: OS Command Injection in the baserCMS Update Functionality","description":"baserCMS is a website development framework. Prior to version 5.2.3, there is an OS command injection vulnerability in the update functionality. Due to this issue, an authenticated user with administrator privileges in baserCMS can execute arbitrary OS commands on the server with the privileges of the user account running baserCMS. This issue has been patched in version 5.2.3.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01543,"percentile":0.75323,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-78"],"published":"2026-03-31T00:45:09Z","modified":"2026-10-28T02:31:03Z","fixes":[{"ecosystem":"Packagist","package":"baserproject/basercms","fixed_in":["5.2.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"baserproject/basercms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"5.2.2"},{"fixed":"5.2.3"}]}]},{"source":"osv","ecosystem":"Packagist","package":"baserproject/basercms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.2.3"}]}],"versions":["0.0.1","0.0.2","0.0.3","0.0.4","0.0.5","0.0.6","0.0.7","0.0.8","1.0.0","2.0.0-rc1","2.0.0-rc2","2.0.0-rc3","2.0.0-rc4","2.0.0-rc5","2.0.0-rc6","3.0.10","3.0.10.1","3.0.11","3.0.11.1","3.0.12","3.0.13","3.0.14","3.0.15","3.0.16","3.0.17","3.0.18","3.0.19","3.0.20","3.0.21","3.0.22","3.0.23","3.0.24","3.0.25","3.0.26","3.0.7","3.0.7.1","3.0.8","3.0.8.1","3.0.9","3.0.9.1","4.0.0","4.0.0-beta","4.0.1","4.0.10","4.0.10.1","4.0.11","4.0.2","4.0.2.1","4.0.3","4.0.4","4.0.5","4.0.5.1","4.0.5.2","4.0.6","4.0.7","4.0.8","4.0.9","4.1.0","4.1.0.1","4.1.1","4.1.2","4.1.3","4.1.4","4.1.5","4.1.6","4.1.7","4.1.8","4.2.0","4.2.1","4.2.2","4.2.3","4.2.4","4.2.5","4.3.0","4.3.1","4.3.2","4.3.3","4.3.4","4.3.5","4.3.6","4.3.7","4.3.7.1","4.4.0","4.4.1","4.4.1.1","4.4.2","4.4.2.1","4.4.3","4.4.4","4.4.5","4.4.6","4.4.7","4.4.8","4.5.0","4.5.1","4.5.2","4.5.3","4.5.4","4.5.5","4.5.6","4.6.0","4.6.1","4.6.1.1","4.6.2","4.6.3","4.7.0","4.7.2","4.7.3","4.7.5","4.7.6","4.7.7","4.7.8","4.8.0","4.8.1","4.8.2","4.8.3","5.0.0","5.0.0-beta1","5.0.0-beta2","5.0.0-beta3","5.0.0-beta4","5.0.1","5.0.10","5.0.11","5.0.12","5.0.14","5.0.15","5.0.16","5.0.17","5.0.18","5.0.19","5.0.2","5.0.20","5.0.21","5.0.3","5.0.4","5.0.5","5.0.6","5.0.7","5.0.8","5.0.9","5.1.0","5.1.1","5.1.10","5.1.2","5.1.3","5.1.4","5.1.5","5.1.6","5.1.7","5.1.8","5.1.9","5.2.0","5.2.1","5.2.2"]}],"products":[{"vendor":"basercms","product":"basercms"},{"vendor":"baserproject","product":"basercms"}],"references":[{"url":"https://github.com/baserproject/basercms/security/advisories/GHSA-m9g7-rgfc-jcm7","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory","web"]},{"url":"https://basercms.net/security/JVN_20837860","tags":["x_refsource_MISC","Vendor Advisory","web"]},{"url":"https://github.com/baserproject/basercms/releases/tag/5.2.3","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30877","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-m9g7-rgfc-jcm7"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30877.json","tags":["advisory"]},{"url":"https://github.com/baserproject/basercms","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-30877","title":"baserCMS: OS Command Injection in the baserCMS Update Functionality","description":"baserCMS is a website development framework. Prior to version 5.2.3, there is an OS command injection vulnerability in the update functionality. Due to this issue, an authenticated user with administrator privileges in baserCMS can execute arbitrary OS commands on the server with the privileges of the user account running baserCMS. This issue has been patched in version 5.2.3.","status":"published","published":"2026-03-31T00:45:09.718Z","modified":"2026-04-02T14:43:52.296Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T13:43:56.024247Z"}],"euvd":[{"id":"EUVD-2026-17259","description":"baserCMS is a website development framework. Prior to version 5.2.3, there is an OS command injection vulnerability in the update functionality. Due to this issue, an authenticated user with administrator privileges in baserCMS can execute arbitrary OS commands on the server with the privileges of the user account running baserCMS. This issue has been patched in version 5.2.3.","status":"published","published":"2026-03-31T00:45:09Z","modified":"2026-04-02T14:43:52Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:25:23.121433Z"}],"ghsa":[{"id":"GHSA-m9g7-rgfc-jcm7","title":"baserCMS Update Functionality Vulnerable to OS Command Injection","description":"### Summary\nThe latest version of baserCMS (basercms-5.2.2) contains an OS command injection vulnerability (CWE-78) in its update functionality.\nDue to this issue, an authenticated user with administrator privileges in baserCMS can execute arbitrary OS commands on the server with the privileges of the user account running baserCMS.\n\n### Details\nPlease refer to the attached materials.\n[OSコマンドインジェクション（baserCMSのアップデート機能）.pdf](https://github.com/user-attachments/files/25468689/OS.baserCMS.pdf)\n\n\n\n### Impact\nAn authenticated user with administrator privileges in baserCMS can execute OS commands on the server with the privileges of the user account running baserCMS.","status":"published","published":"2026-03-31T22:35:47Z","modified":"2026-03-31T22:35:47Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:39:47.075804Z"}],"nvd":[{"id":"CVE-2026-30877","description":"baserCMS is a website development framework. Prior to version 5.2.3, there is an OS command injection vulnerability in the update functionality. Due to this issue, an authenticated user with administrator privileges in baserCMS can execute arbitrary OS commands on the server with the privileges of the user account running baserCMS. This issue has been patched in version 5.2.3.","status":"published","published":"2026-03-31T01:16:35.83Z","modified":"2026-06-17T10:33:04.63Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:12:12.261218Z"}],"osv":[{"id":"CVE-2026-30877","title":"baserCMS: OS Command Injection in the baserCMS Update Functionality","description":"baserCMS is a website development framework. Prior to version 5.2.3, there is an OS command injection vulnerability in the update functionality. Due to this issue, an authenticated user with administrator privileges in baserCMS can execute arbitrary OS commands on the server with the privileges of the user account running baserCMS. This issue has been patched in version 5.2.3.","status":"published","published":"2026-03-31T00:45:09.718Z","modified":"2026-10-28T02:31:03.306452123Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:45:00.861953Z"},{"id":"GHSA-m9g7-rgfc-jcm7","title":"baserCMS Update Functionality Vulnerable to OS Command Injection","description":"### Summary\nThe latest version of baserCMS (basercms-5.2.2) contains an OS command injection vulnerability (CWE-78) in its update functionality.\nDue to this issue, an authenticated user with administrator privileges in baserCMS can execute arbitrary OS commands on the server with the privileges of the user account running baserCMS.\n\n### Details\nPlease refer to the attached materials.\n[OSコマンドインジェクション（baserCMSのアップデート機能）.pdf](https://github.com/user-attachments/files/25468689/OS.baserCMS.pdf)\n\n\n\n### Impact\nAn authenticated user with administrator privileges in baserCMS can execute OS commands on the server with the privileges of the user account running baserCMS.","status":"published","published":"2026-03-31T22:35:47Z","modified":"2026-09-10T03:50:39.914374527Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:46:51.811331Z"}]}}