FKIE_CVE-2026-45139

Vulnerability from fkie_nvd - Published: 2026-07-20 15:16 - Updated: 2026-07-21 20:27
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Summary
CI4MS is a CodeIgniter 4-based content management system skeleton. Prior to version 0.31.9.0, the Fileeditor module enforces an extension allowlist (`['css','js','html','txt','json','sql','md']`) on content-write operations (`saveFile`, `createFile`), but two destructive endpoints — `deleteFileOrFolder` and `renameFile` — never validate the extension of the *source* path. A backend user with file-editor permissions can therefore unlink or rename any file inside the project root that is not explicitly listed in the small `$hiddenItems` blocklist. Critical framework files such as `app/Config/Routes.php`, `app/Config/App.php`, `app/Config/Database.php`, `app/Config/Filters.php`, `public/index.php`, and `public/.htaccess` all live outside that blocklist and can be destroyed, producing a persistent denial of service that requires filesystem-level redeployment to recover. Version 0.31.9.0 patches the issue.
References
security-advisories@github.comhttps://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.9.0
security-advisories@github.comhttps://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-245j-xjvr-xvm5
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-245j-xjvr-xvm5
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "ci4ms",
          "vendor": "ci4-cms-erp",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.31.9.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "CI4MS is a CodeIgniter 4-based content management system skeleton. Prior to version 0.31.9.0, the Fileeditor module enforces an extension allowlist (`[\u0027css\u0027,\u0027js\u0027,\u0027html\u0027,\u0027txt\u0027,\u0027json\u0027,\u0027sql\u0027,\u0027md\u0027]`) on content-write operations (`saveFile`, `createFile`), but two destructive endpoints \u2014 `deleteFileOrFolder` and `renameFile` \u2014 never validate the extension of the *source* path. A backend user with file-editor permissions can therefore unlink or rename any file inside the project root that is not explicitly listed in the small `$hiddenItems` blocklist. Critical framework files such as `app/Config/Routes.php`, `app/Config/App.php`, `app/Config/Database.php`, `app/Config/Filters.php`, `public/index.php`, and `public/.htaccess` all live outside that blocklist and can be destroyed, producing a persistent denial of service that requires filesystem-level redeployment to recover. Version 0.31.9.0 patches the issue."
    }
  ],
  "id": "CVE-2026-45139",
  "lastModified": "2026-07-21T20:27:18.523",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-45139",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-20T16:40:29.784246Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-20T15:16:38.020",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.9.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-245j-xjvr-xvm5"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-245j-xjvr-xvm5"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-73"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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