CVE-2005-2539

Status: ModifiedMedium (4.3)—💥 Exploit

Multiple cross-site scripting (XSS) vulnerabilities in FlatNuke 2.5.5 and possibly earlier versions allow remote attackers to inject arbitrary web script or HTML via the (1) bodycolor, (2) backimage, (3) theme, or (4) logo parameter to structure.php, (5) admin, (6) admin_mail, or (7) back parameter to footer.php, or (8) the message body in a news post.

CVSS

Version: 2.0
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Base score: 4.3

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 2.53%
Percentile among all scored CVEs: 84
Score date: 10/7/2026

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).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Published on Exploit-DB · FlatNuke 2.5.5 - 'structure.php' Multiple Cross-Site Scripting Vulnerabilities (8/5/2005)
Published on Exploit-DB · FlatNuke 2.5.5 - 'footer.php' Multiple Cross-Site Scripting Vulnerabilities (8/5/2005)

Affected technologies (1)

Flatnuke — Flatnuke

CWEs

NVD-CWE-Other

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2005-2539",
  "cveTags": [],
  "metrics": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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  "published": "2005-08-10T04:00:00.000",
  "references": [
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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  "descriptions": [
    {
      "lang": "en",
      "value": "Multiple cross-site scripting (XSS) vulnerabilities in FlatNuke 2.5.5 and possibly earlier versions allow remote attackers to inject arbitrary web script or HTML via the (1) bodycolor, (2) backimage, (3) theme, or (4) logo parameter to structure.php, (5) admin, (6) admin_mail, or (7) back parameter to footer.php, or (8) the message body in a news post."
    }
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  "lastModified": "2026-06-16T22:15:09.910",
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