Mendbird
Menu

The plugin register. Used on 200,000+ sites

GenerateBlocks

9known security flaws found in GenerateBlocks
since November 2021

Safe from 2.4.0

Version 2.4.0 or later fixes all of them. A site on an older version is open to them.

Or let us look for you

Free, with no sign up. About ten seconds, and nothing on your site is touched. See an example report

When they were found.

Minor: Cross-site scripting, November 2021Minor: Missing checks, March 2024Minor: Information leak, February 2025Minor: Missing checks, October 2025Minor: Information leak, December 2025Minor: Missing checks, May 2026Minor: Information leak, May 2026Minor: Cross-site scripting, July 2026Minor: Cross-site scripting, July 2026202120222023202420252026

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
  • Information leak

    It could give away information that should stay private, such as user details, file locations or settings, which makes other attacks easier.

    How: The software shows, sends or logs more than it should.

  • 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
Every known flaw, newest first (9)
  1. July 2026MinorCross-site scriptingFixed in 2.3.0. Needs a login on the site (Contributor+).
  2. July 2026MinorCross-site scriptingFixed in 2.4.0. Needs a login on the site (Contributor+).
  3. May 2026MinorInformation leakFixed in 2.1.1. Needs a login on the site (Contributor+).
  4. May 2026MinorMissing checksFixed in 2.2.1. Needs a login on the site (Contributor+).
  5. December 2025MinorInformation leakFixed in 2.2.0. Needs a login on the site (Contributor+).
  6. October 2025MinorMissing checksFixed in 2.1.2. Needs a login on the site (Contributor+).
  7. February 2025MinorInformation leakFixed in 2.0.0. Needs a login on the site.
  8. March 2024MinorMissing checksFixed in 1.8.3. Needs a login on the site.
  9. November 2021MinorCross-site scriptingFixed in 1.4.0. 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.

Be told the day a new one is found.

Mendbird checks your site every morning against the lists of known flaws, and emails you in plain English the day one hits something you run. Free for 14 days, then £9 a month.

Start my free trial