GHSA-M9G7-RGFC-JCM7

Vulnerability from github – Published: 2026-03-31 22:35 – Updated: 2026-03-31 22:35
VLAI?
Summary
baserCMS Update Functionality Vulnerable to OS Command Injection
Details

Summary

The latest version of baserCMS (basercms-5.2.2) contains an OS command injection vulnerability (CWE-78) in its 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.

Details

Please refer to the attached materials. OSコマンドインジェクション（baserCMSのアップデート機能）.pdf

Impact

An authenticated user with administrator privileges in baserCMS can execute OS commands on the server with the privileges of the user account running baserCMS.

Severity ?
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 5.2.2"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "baserproject/basercms"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.2.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-30877"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-31T22:35:47Z",
    "nvd_published_at": "2026-03-31T01:16:35Z",
    "severity": "CRITICAL"
  },
  "details": "### 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\u30b3\u30de\u30f3\u30c9\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\uff08baserCMS\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u6a5f\u80fd\uff09.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.",
  "id": "GHSA-m9g7-rgfc-jcm7",
  "modified": "2026-03-31T22:35:47Z",
  "published": "2026-03-31T22:35:47Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/baserproject/basercms/security/advisories/GHSA-m9g7-rgfc-jcm7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-30877"
    },
    {
      "type": "WEB",
      "url": "https://basercms.net/security/JVN_20837860"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/baserproject/basercms"
    },
    {
      "type": "WEB",
      "url": "https://github.com/baserproject/basercms/releases/tag/5.2.3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "baserCMS Update Functionality Vulnerable to OS Command Injection"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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