CyberSecBulletin

Improper Neutralization of Encoded URI Schemes in a Web Page

CWE-84

The web application improperly neutralizes user-controlled input for executable script disguised with URI encodings.

We track 3 vulnerabilities of this type. 67% are rated high or critical, and the average CVSS score is 7.8. 1 has been exploited in real attacks.

How this weakness is prevented

  • Implementation: Resolve all URIs to absolute or canonical representations before processing.
  • Implementation: With Struts, write all data from form beans with the bean's filter attribute set to true.

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