The plugin register. Used on 600,000+ sites
Under Construction
8known security flaws found in Under Construction
since January 2021
Safe from 5.83
Version 5.83 or later fixes all of them. A site on an older version is open to them.
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When they were found.
DangerousMajorMinorAdvisory
What they could let someone do.
What could happen
- Cross-site scripting
Someone could make your pages run their own script in visitors' browsers, to steal logins, show a fake payment form or send people to a scam site.
How: The software puts text it was sent back onto a page without making it safe first, so a script hidden in a link, form or comment runs as if it were part of your site.
Read about it here - Forged requests
Someone could get a signed in administrator to change something without knowing, such as adding a new admin or changing settings, just by visiting a page.
How: The software does not check that a change came from its own pages, so another site can quietly send one through the administrator's browser.
Read about it here - Reading files
Someone could read files on the server they should never see, such as the settings file holding the database password, or delete files the site needs.
How: The software takes a file name from a request and does not check that it stays inside its own folder.
Read about it here
Every known flaw, newest first (8)
- July 2026MinorReading filesFixed in 5.81. Needs a login on the site (Subscriber+).
- February 2023AdvisoryForged requestsFixed in 3.97.
- February 2023MinorForged requestsFixed in 3.97. No login needed.
- February 2023MinorForged requestsFixed in 3.97. No login needed.
- February 2023MajorCross-site scriptingFixed in 5.83. No login needed.
- January 2021AdvisoryCross-site scriptingFixed in 3.86.
- January 2021AdvisoryCross-site scriptingFixed in 3.86.
- Date not knownAdvisoryCross-site scriptingFixed in 3.86.
From the public lists of known flaws, checked daily. A flaw is listed once it is made public, often after a fix is out.
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