Invision Power Board class_upload.php cross-site scripting

ipb-classupload-xss (33942) The risk level is classified as MediumMedium Risk


Invision Power Board is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the class_upload.php script. A remote attacker could exploit this vulnerability by uploading a specially-crafted image or PDF file containing malicious HTML or script code which would be executed in a victim's Web browser within the security context of the hosting Web site, once the image is viewed. An attacker could use this vulnerability to steal the victim's cookie-based authentication credentials.


Base Score: 4.2
  Access Vector: Remote
  Access Complexity: High
  Authentication: Not Required
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: None
Temporal Score: 3.7
  Exploitability: High
  Remediation Level: Official-Fix
  Report Confidence: Confirmed


Gain Access


Refer to Invision Power Services Forums for patch, upgrade, or suggested workaround information. See References.


  • Invision Power Services Forums: Possible XSS Issue Addressed in IP.Board.
  • CVE-2007-2349: Cross-site scripting (XSS) vulnerability in Invision Power Board (IP.Board) 2.1.x and 2.2.x allows remote attackers to inject arbitrary web script or HTML by uploading crafted images or PDF files.
  • OSVDB ID: 35427: IP.Board class_upload.php Image / PDF XSS
  • SA25021: Invision Power Board class_upload.php Cross-Site Scripting

Platforms Affected:

  • Invision Power Invision Power Board 2.1.x
  • Invision Power Invision Power Board 2.2.x


Apr 26, 2007

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