The plugin register. Used on 200,000+ sites
Advanced Google reCAPTCHA
6known security flaws found in Advanced Google reCAPTCHA
since December 2024
1 with no fix yet
Version 5.39 or later fixes the others. One has no fix yet. 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
- Missing checks
Someone could do things only an administrator should: change settings, see private data, or give themselves more rights.
How: Part of the software forgets to check who is asking before it does what was asked.
Read about it here - Running code
Someone could run their own code on the server and take the site over: add malware, send spam, steal data, or use it to attack others.
How: Part of the software treats something it was sent as instructions to follow, or keeps an uploaded file somewhere it can be run.
Read about it here - Database injection
Someone could read or change what is in the site's database: customer details, orders, password records, or a new administrator account.
How: The software builds its questions to the database out of what visitors type, so carefully written input changes the question itself.
Read about it here
Every known flaw, newest first (6)
- October 2026MinorMissing checksNo fix yet. No login needed.
- June 2026MajorMissing checksFixed in 5.39. Needs a login on the site (Subscriber+).
- June 2026MajorRunning codeFixed in 5.39. Needs a login on the site (Subscriber+).
- March 2025MinorDatabase injectionFixed in 1.30. Needs a login on the site (Subscriber+).
- February 2025MinorA security flawFixed in 1.28. No login needed.
- December 2024MinorA security flawFixed in 1.26. No login needed.
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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