WordPress Security update Release

Number: AV16-074
Date: 6 May 2016


The purpose of this advisory is to bring attention to a WordPress 4.5.2 Security Release.


WordPress versions 4.5.1 and previous are affected by a SOME vulnerability through Plupload, the third party library used by Wordpress to upload files.

WordPress versions 4.2 through 4.5.1 are affected by a XSS vulnerability using specially crafted URIs through MediaElement.js, the third party library for media used by Wordpress.

Suggested Action

CCIRC recommends that owner/operators test and deploy the vendor released update or workaround to affected platforms accordingly.



Note to Readers

In support of Public Safety's mission to build a safe and resilient Canada, CCIRC's mandate is to help ensure the security and resilience of the vital non-federal government cyber systems that underpin Canada's national security, public safety and economic prosperity. As Canada's computer security incident response team, CCIRC is Canada's national coordination centre for the prevention and mitigation of, preparedness for, response to, and recovery from cyber incidents on non-federal government systems. It does this by providing authoritative advice and support, and coordinating information sharing and incident response.

Please note, CCIRC PGP key has recently been updated.

For general information, please contact Public Safety Canada's Public Affairs division at:

Telephone: 613-944-4875 or 1-800-830-3118
Fax: 613-998-9589
E-mail: ps.communications-communications.sp@canada.ca

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