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Page Builder by SiteOrigin

13known security flaws found in Page Builder by SiteOrigin
since January 2015

Safe from 2.36.1

Version 2.36.1 or later fixes all of them. A site on an older version is open to them.

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When they were found.

Advisory: a security flaw, January 2015Advisory: Cross-site scripting, December 2015Major: Forged requests, May 2020Major: Forged requests, May 2020Advisory: Cross-site scripting, January 2023Minor: Cross-site scripting, March 2024Minor: Cross-site scripting, May 2024Minor: Cross-site scripting, January 2025Minor: Cross-site scripting, February 2025Advisory: Reading files, March 2026Minor: Cross-site scripting, June 2026Major: Running code, June 2026201520172019202120232025

DangerousMajorMinorAdvisory

What they could let someone do.

What could happen

  • 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
  • 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 (13)
  1. June 2026MinorCross-site scriptingFixed in 2.34.4. Needs a login on the site (Contributor+).
  2. June 2026MajorRunning codeFixed in 2.36.1. Needs a login on the site (Editor+).
  3. March 2026AdvisoryReading filesFixed in 2.34.0. Needs a login on the site (Contributor+).
  4. February 2025MinorCross-site scriptingFixed in 2.31.5. Needs a login on the site (Contributor+).
  5. January 2025MinorCross-site scriptingFixed in 2.31.1. Needs a login on the site.
  6. May 2024MinorCross-site scriptingFixed in 2.29.16. Needs a login on the site.
  7. March 2024MinorCross-site scriptingFixed in 2.29.7. Needs a login on the site (Contributor+).
  8. January 2023AdvisoryCross-site scriptingFixed in 2.0.5.
  9. May 2020MajorForged requestsFixed in 2.10.16. No login needed.
  10. May 2020MajorForged requestsFixed in 2.10.16. No login needed.
  11. December 2015AdvisoryCross-site scriptingFixed in 2.0.5.
  12. January 2015AdvisoryA security flawFixed in 2.0.5.
  13. Date not knownAdvisoryCross-site scriptingFixed in 2.0.5.

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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