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Page Builder Gutenberg Blocks

8known security flaws found in Page Builder Gutenberg Blocks
since March 2024

Safe from 3.1.17

Version 3.1.17 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, March 2024Minor: Cross-site scripting, March 2024Minor: Cross-site scripting, May 2024Minor: Server side request forgery, July 2024Minor: Cross-site scripting, August 2024Minor: Missing checks, January 2025Minor: Cross-site scripting, January 2026Minor: Cross-site scripting, April 2026202420252026

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
  • 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
  • Server side request forgery

    Someone could make your server fetch addresses for them, reaching services that are meant to be private.

    How: The software fetches an address it was sent without checking where it points.

Every known flaw, newest first (8)
  1. April 2026MinorCross-site scriptingFixed in 3.1.17. Needs a login on the site (Contributor+).
  2. January 2026MinorCross-site scriptingFixed in 3.1.17. Needs a login on the site (Contributor+).
  3. January 2025MinorMissing checksFixed in 3.1.14. Needs a login on the site.
  4. August 2024MinorCross-site scriptingFixed in 3.1.13. Needs a login on the site.
  5. July 2024MinorServer side request forgeryFixed in 3.1.12. Needs a login on the site (Contributor+).
  6. May 2024MinorCross-site scriptingFixed in 3.1.10. Needs a login on the site (Contributor+).
  7. March 2024MinorCross-site scriptingFixed in 3.1.7. Needs a login on the site (Contributor+).
  8. March 2024MinorCross-site scriptingFixed in 3.1.7. Needs a login on the site (Contributor+).

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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