CVE-2026-70376 (GCVE-0-2026-70376)

Vulnerability from cvelistv5 – Published: 2026-08-05 06:58 – Updated: 2026-08-05 06:58
VLAI
Title
Pluck CMS: CSRF via Spoofable Missing-Referer Bypass Leads to Stored XSS and RCE
Summary
Pluck CMS's admin panel relies solely on a Referer-header comparison (requestedByTheSameDomain() in data/inc/functions.admin.php, gating every admin.php action) for CSRF protection, with no per-request anti-CSRF token anywhere in the admin area. When a request carries no Referer/Host information, the function's elseif branch returns true, treating the request as same-origin. Because a cross-site attacker page can suppress the Referer header (e.g. via <meta name=referrer content=no-referrer>), it can force an authenticated administrator's browser to submit forged admin actions with no valid Referer, including creating pages with raw HTML (stored XSS via the rendered page) and installing PHP modules/themes (remote code execution).
Severity
9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CWE
  • CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
Impacted products
Vendor Product Version
pluck-cms Pluck CMS Affected: 0 , < 4.7.21 (custom)
Create a notification for this product.
Credits
ILHOMJON RUSTAMOV
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Pluck CMS",
          "programFiles": [
            "admin.php",
            "data/inc/functions.admin.php"
          ],
          "vendor": "pluck-cms",
          "versions": [
            {
              "lessThan": "4.7.21",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "ILHOMJON RUSTAMOV"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Pluck CMS\u0027s admin panel relies solely on a Referer-header comparison (requestedByTheSameDomain() in data/inc/functions.admin.php, gating every admin.php action) for CSRF protection, with no per-request anti-CSRF token anywhere in the admin area. When a request carries no Referer/Host information, the function\u0027s elseif branch returns true, treating the request as same-origin. Because a cross-site attacker page can suppress the Referer header (e.g. via \u003cmeta name=referrer content=no-referrer\u003e), it can force an authenticated administrator\u0027s browser to submit forged admin actions with no valid Referer, including creating pages with raw HTML (stored XSS via the rendered page) and installing PHP modules/themes (remote code execution)."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "value": "CRITICAL"
            },
            "type": "CVSS_3.1_severity"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 9.6,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-352",
              "description": "CWE-352 Cross-Site Request Forgery (CSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T06:58:44.471Z",
        "orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
        "shortName": "TuranSec"
      },
      "references": [
        {
          "url": "https://github.com/pluck-cms/pluck"
        }
      ],
      "title": "Pluck CMS: CSRF via Spoofable Missing-Referer Bypass Leads to Stored XSS and RCE"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
    "assignerShortName": "TuranSec",
    "cveId": "CVE-2026-70376",
    "datePublished": "2026-08-05T06:58:44.471Z",
    "dateReserved": "2026-08-04T07:13:07.993Z",
    "dateUpdated": "2026-08-05T06:58:44.471Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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