CVE-2017-16562

The UserPro plugin before 4.9.17.1 for WordPress, when used on a site with the "admin" username, allows remote attackers to bypass authentication and obtain…

published November 9, 2017

CVSS
—
EPSS
27%
Percentile
98.1
In the wild
Unconfirmed
What it is

⚡ Just a simple query string tweak can let an attacker bypass authentication and become an admin on your WordPress site! Think of it like a restaurant where the chef leaves the back door open, and anyone can walk in pretending to be the manager just by saying, "I'm here to help!" If exploited, a remote attacker could gain full administrative access to your site, potentially wreaking havoc by modifying content, deleting files, or even installing malicious software. This oversight is surprisingly sneaky, and the consequences could be mind-blowingly severe!

Put simply

Think of it like a restaurant where the chef leaves the back door open, and anyone can walk in pretending to be the manager just by saying, "I'm here to help!" This vulnerability in the UserPro plugin allows an attacker to bypass authentication if the site uses 'admin' as the username and sends a 'true' value for the up_auto_log parameter in the query string, granting them unauthorized administrative access.

What to do

If exploited, a remote attacker could gain full administrative access to your site, potentially wreaking havoc by modifying content, deleting files, or even installing malicious software. This oversight is surprisingly sneaky, and the consequences could be mind-blowingly severe! To safeguard against this vulnerability, update your UserPro plugin to version 4.9.17.1 or later, and consider changing the default 'admin' username to something unique. Regularly auditing your user access permissions can also help keep your site secure. You've got this! Stay proactive and secure your site now! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.27369 · 98.1th percentile
Published
2017-11-09T19:00Z
EPSS history
Timeline
  • 09 NOV 19:00Z
    The UserPro plugin before 4.9.17.1 for WordPress, when used on a site with the "admin" username, allows remote attackers to bypass authentication and obtain…
    cvelistv5