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CVE-2026-54506 (GCVE-0-2026-54506)

Vulnerability from cvelistv5 – Published: 2026-09-17 21:47 – Updated: 2026-09-17 21:47
VLAI
Title
Vvveb: Stored XSS via sanitizeHTML() bypass in user profile bio field
Summary
Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.5, app/controller/user/profile.php accepts the user[bio] field and passes stored content through sanitizeHTML() in system/functions.php, whose on* event-handler regular expression omits the forward-slash delimiter and whose do-while condition compares the string to itself, so forbidden nested tags are removed only once. An Author-role or higher user can submit solidus-prefixed event-handler markup or nested forbidden tags that survive sanitization. The stored bio is rendered without sufficient output encoding on /author/{username}, in the admin user-management view, and potentially in comment displays, causing attacker-controlled JavaScript to execute when unauthenticated visitors, administrators, or other users view the content. This can expose browser-session data and permit victim-context account actions, defacement, or phishing. This issue is fixed in version 1.0.8.5.
Severity
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
  • CWE-116 - Improper Encoding or Escaping of Output
  • CWE-185 - Incorrect Regular Expression
Assigner
References
Impacted products
Vendor Product Version CPE status
givanz Vvveb Affected: < 1.0.8.5
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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        }
      ],
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            "attackVector": "NETWORK",
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            "baseScore": 7.6,
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              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
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              "description": "CWE-185: Incorrect Regular Expression",
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      "providerMetadata": {
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        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
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          "url": "https://github.com/givanz/Vvveb/security/advisories/GHSA-5cg7-phhv-4qjr"
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        {
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          "tags": [
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      "source": {
        "advisory": "GHSA-5cg7-phhv-4qjr",
        "discovery": "UNKNOWN"
      },
      "title": "Vvveb: Stored XSS via sanitizeHTML() bypass in user profile bio field"
    }
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    "cveId": "CVE-2026-54506",
    "datePublished": "2026-09-17T21:47:20.530Z",
    "dateReserved": "2026-06-15T18:01:15.512Z",
    "dateUpdated": "2026-09-17T21:47:20.530Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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  }
}



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