CVE-2026-121491

Full vulnerability record from the local CVENow database.

Description

The Fiber Admin WordPress plugin before 4.0.1 does not validate or escape a request header before writing it into a PHP file it regenerates on an unprotected admin hook, allowing unauthenticated attackers to execute arbitrary code when its custom database error page is enabled and they win a race against an administrator saving its settings.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

[email protected]

Published

2026-11-07 06:16:58.280000

Last modified

2026-11-07 06:16:58.280000

View original CVE JSON

{
  "id": "CVE-2026-121491",
  "sourceIdentifier": "[email protected]",
  "published": "2026-11-07T06:16:58.280",
  "lastModified": "2026-11-07T06:16:58.280",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Fiber Admin WordPress plugin before 4.0.1 does not validate or escape a request header before writing it into a PHP file it regenerates on an unprotected admin hook, allowing unauthenticated attackers to execute arbitrary code when its custom database error page is enabled and they win a race against an administrator saving its settings."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Unknown",
          "product": "Fiber Admin",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "3.1.0",
              "lessThan": "4.0.1",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://wpscan.com/vulnerability/42b9773d-9c69-4435-be20-ae86f52b4608/",
      "source": "[email protected]"
    }
  ]
}