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CVE-2018-25248

Status: AnalyzedMedium (5.1)—

MyBB Downloads Plugin 2.0.3 contains a persistent cross-site scripting vulnerability that allows regular members to inject malicious scripts through the download title field. Attackers can submit a new download with HTML/JavaScript code in the title parameter, which executes when administrators validate the download in downloads.php.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Mybb — Mybb Downloads

CWEs

References

Raw JSON (NVD)

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          "version": "2.0.3",
          "timestamp": "2026-04-06T15:08:21.425083Z"
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
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          "valueDensity": "NOT_DEFINED",
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          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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  "published": "2026-04-04T14:16:20.683",
  "references": [
    {
      "url": "https://community.mybb.com/mods.php?action=view&pid=854",
      "tags": [
        "Permissions Required",
        "Product"
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      "tags": [
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    },
    {
      "url": "https://www.vulncheck.com/advisories/mybb-downloads-plugin-persistent-xss-via-downloads-php",
      "tags": [
        "Third Party Advisory"
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      "source": "disclosure@vulncheck.com"
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  "vulnStatus": "Analyzed",
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      "description": [
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          "value": "CWE-79"
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      "value": "MyBB Downloads Plugin 2.0.3 contains a persistent cross-site scripting vulnerability that allows regular members to inject malicious scripts through the download title field. Attackers can submit a new download with HTML/JavaScript code in the title parameter, which executes when administrators validate the download in downloads.php."
    },
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      "lang": "es",
      "value": "MyBB Downloads Plugin 2.0.3 contiene una vulnerabilidad de cross-site scripting persistente que permite a los miembros regulares inyectar scripts maliciosos a través del campo de título de descarga. Los atacantes pueden enviar una nueva descarga con código HTML/JavaScript en el parámetro de título, que se ejecuta cuando los administradores validan la descarga en downloads.php."
    }
  ],
  "lastModified": "2026-07-20T20:10:00.110",
  "configurations": [
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}