The plugin register. Used on 600,000+ sites

Click to Chat

5known security flaws found in Click to Chat
since December 2022

Safe from 4.45

Version 4.45 or later fixes all of them. A site on an older version is open to them.

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When they were found.

Minor: Cross-site scripting, December 2022Major: Running code, April 2024Minor: Cross-site scripting, June 2025Minor: Cross-site scripting, June 2026Dangerous: Running code, June 202620222023202420252026

DangerousMajorMinorAdvisory

What they could let someone do.

What could happen

  • 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
  • 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
Every known flaw, newest first (5)
  1. June 2026MinorCross-site scriptingFixed in 4.40. Needs a login on the site (Contributor+).
  2. June 2026DangerousRunning codeFixed in 4.45. No login needed.
  3. June 2025MinorCross-site scriptingFixed in 4.23. Needs a login on the site (Contributor+).
  4. April 2024MajorRunning codeFixed in 4.0. Needs a login on the site (Contributor+).
  5. December 2022MinorCross-site scriptingFixed in 3.18.1. Needs a login on the site.

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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