FKIE_CVE-2026-6227

Vulnerability from fkie_nvd - Published: 2026-04-14 03:16 - Updated: 2026-04-22 20:23
Severity ?
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
The BackWPup plugin for WordPress is vulnerable to Local File Inclusion via the `block_name` parameter of the `/wp-json/backwpup/v1/getblock` REST endpoint in all versions up to, and including, 5.6.6 due to a non-recursive `str_replace()` sanitization of path traversal sequences. This makes it possible for authenticated attackers, with Administrator-level access and above, to include arbitrary PHP files on the server via crafted traversal sequences (e.g., `....//`), which can be leveraged to read sensitive files such as `wp-config.php` or achieve remote code execution in certain configurations. Administrators have the ability to grant individual users permission to handle backups, which may then allow lower-level users to exploit this vulnerability.
References
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/backwpup/tags/5.6.5/inc/Utils/BackWPupHelpers.php#L23
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/backwpup/tags/5.6.5/inc/Utils/BackWPupHelpers.php#L40
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/backwpup/tags/5.6.5/src/Frontend/API/Rest.php#L52
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/backwpup/trunk/inc/Utils/BackWPupHelpers.php#L23
security@wordfence.comhttps://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3490642%40backwpup%2Ftrunk&old=3475739%40backwpup%2Ftrunk&sfp_email=&sfph_mail=#file26
security@wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/084e3f78-275b-4692-9cce-e17074f55cfb?source=cve
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The BackWPup plugin for WordPress is vulnerable to Local File Inclusion via the `block_name` parameter of the `/wp-json/backwpup/v1/getblock` REST endpoint in all versions up to, and including, 5.6.6 due to a non-recursive `str_replace()` sanitization of path traversal sequences. This makes it possible for authenticated attackers, with Administrator-level access and above, to include arbitrary PHP files on the server via crafted traversal sequences (e.g., `....//`), which can be leveraged to read sensitive files such as `wp-config.php` or achieve remote code execution in certain configurations. Administrators have the ability to grant individual users permission to handle backups, which may then allow lower-level users to exploit this vulnerability."
    }
  ],
  "id": "CVE-2026-6227",
  "lastModified": "2026-04-22T20:23:16.350",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 5.9,
        "source": "security@wordfence.com",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-04-14T03:16:08.887",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/backwpup/tags/5.6.5/inc/Utils/BackWPupHelpers.php#L23"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/backwpup/tags/5.6.5/inc/Utils/BackWPupHelpers.php#L40"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/backwpup/tags/5.6.5/src/Frontend/API/Rest.php#L52"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/backwpup/trunk/inc/Utils/BackWPupHelpers.php#L23"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026new=3490642%40backwpup%2Ftrunk\u0026old=3475739%40backwpup%2Ftrunk\u0026sfp_email=\u0026sfph_mail=#file26"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/084e3f78-275b-4692-9cce-e17074f55cfb?source=cve"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Primary"
    }
  ]
}


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