Updates on WordPress security, Wordfence and what we're cooking in the lab today.

Author Archive: Matt Barry

Wordfence Blog

Stored XSS Patched in SyntaxHighlighter Evolved Plugin

This entry was posted in Vulnerabilities, WordPress Security on October 22, 2019 by Matt Barry   6 Replies

Description: Stored XSS CVSS Severity Score: 6.1 (Medium) CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Affected Software: SyntaxHighlighter Evolved Plugin Slug: syntaxhighlighter Affected Version: 3.5.0 Patched Version: 3.5.1 While doing a security audit of the plugins and themes we run on wordfence.com, I discovered a stored XSS vulnerability in SyntaxHighlighter Evolved. SyntaxHighlighter Evolved currently has around 40,000+ active installations. …
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Wordfence Now Works on WP Engine and with Load Balancers

This entry was posted in Wordfence on August 21, 2019 by Matt Barry   15 Replies

Today we are launching a version of Wordfence containing a new feature for sites on hosting providers with read-only file systems such as WP Engine or for environments where multiple web servers are behind a load balancer. This new feature uses a MySQL storage engine for firewall attack data to protect WordPress sites in complex …
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Details of an Additional File Deletion Vulnerability – Patched in WordPress 4.9.7

This entry was posted in Vulnerabilities, Wordfence, WordPress Security on July 05, 2018 by Matt Barry   4 Replies

Today WordPress released version 4.9.7, a security release which addresses two separate arbitrary file deletion vulnerabilities requiring Author privileges. Some details can be found on the WordPress.org blog. The first arbitrary file deletion vulnerability was disclosed June 26, 2018 on the RIPS Tech blog with no official patch to WordPress in place. We released a …
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Wordfence Now Includes 1.4 Billion Leaked Passwords in Password Auditing Feature

This entry was posted in Wordfence, WordPress Security on December 28, 2017 by Matt Barry   7 Replies

Last week, we reported a massive upsurge in brute force login attempts following the leak of a database of 1.4 billion clear text credentials. No one had seen 14% of the exposed username/password pairs before, making this a ripe opportunity for hackers to attempt to break into WordPress sites. Historically, brute force attacks targeting WordPress …
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Backdoor in Captcha Plugin Affects 300K WordPress Sites

This entry was posted in WordPress Security on December 19, 2017 by Matt Barry   105 Replies

The WordPress repository recently removed the plugin Captcha over what initially appeared to be a trademark issue with the current author using “WordPress” [Editors note: the original page has been removed, we’re now linking to a screen shot.] in their brand name. Whenever the WordPress repository removes a plugin with a large user base, we check …
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