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Advanced Custom Fields (ACF®)

33known security flaws found in Advanced Custom Fields (ACF®)
since January 2013

Safe from 6.8.2

Version 6.8.2 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: Running code, January 2013Advisory: Running code, January 2013Advisory: a security flaw, August 2016Minor: Cross-site scripting, December 2018Advisory: Cross-site scripting, December 2018Advisory: Running code, February 2019Minor: Cross-site scripting, June 2020Advisory: a security flaw, August 2021Major: Missing checks, December 2021Minor: Missing checks, December 2021Minor: Missing checks, December 2021Minor: Missing checks, March 2022Major: Running code, July 2022Advisory: Information leak, October 2022Major: Running code, April 2023Advisory: Database injection, April 2023Major: Cross-site scripting, May 2023Advisory: Cross-site scripting, August 2023Minor: Cross-site scripting, August 2023Advisory: Cross-site scripting, January 2024Minor: Cross-site scripting, January 2024Minor: Missing checks, May 2024Minor: Cross-site scripting, September 2024Minor: Running code, October 2024Minor: Cross-site scripting, October 2024Advisory: Cross-site scripting, October 2024Advisory: Running code, August 2025Advisory: Running code, August 2025Minor: Missing checks, April 2026Advisory: a security flaw, May 2026Minor: Missing checks, May 20262013201520172019202120232025

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
  • 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
  • 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 (33)
  1. May 2026MinorMissing checksFixed in 6.8.2. No login needed.
  2. May 2026AdvisoryA security flawFixed in 6.8.2.
  3. April 2026MinorMissing checksFixed in 6.7.1. No login needed.
  4. August 2025AdvisoryRunning codeFixed in 6.4.3. Needs a login on the site.
  5. August 2025AdvisoryRunning codeFixed in 3.5.2.
  6. October 2024AdvisoryCross-site scriptingFixed in 6.3.9.
  7. October 2024MinorCross-site scriptingFixed in 6.3.9. No login needed.
  8. October 2024MinorRunning codeFixed in 6.3.8. Needs a login on the site (Admin+).
  9. September 2024MinorCross-site scriptingFixed in 6.3.6. No login needed.
  10. May 2024MinorMissing checksFixed in 6.3.0. Needs a login on the site.
  11. January 2024MinorCross-site scriptingFixed in 6.2.5. Needs a login on the site (Contributor+).
  12. January 2024AdvisoryCross-site scriptingFixed in 6.2.5.
  13. August 2023AdvisoryCross-site scriptingFixed in 6.1.8.
  14. August 2023MinorCross-site scripting Needs a login on the site.
  15. May 2023MajorCross-site scriptingFixed in 6.1.6. No login needed.
  16. April 2023AdvisoryDatabase injectionFixed in 5.12.5.
  17. April 2023MajorRunning codeFixed in 5.12.5. Needs a login on the site.
  18. October 2022AdvisoryInformation leak No login needed.
  19. July 2022MajorRunning codeFixed in 5.12.3. No login needed.
  20. March 2022MinorMissing checksFixed in 5.12.1. Needs a login on the site.
  21. December 2021MajorMissing checksFixed in 5.11. No login needed.
  22. December 2021MinorMissing checksFixed in 5.11. Needs a login on the site.
  23. December 2021MinorMissing checksFixed in 5.12.1. Needs a login on the site.
  24. August 2021AdvisoryA security flawFixed in 5.10.
  25. June 2020MinorCross-site scriptingFixed in 5.8.12. No login needed.
  26. February 2019AdvisoryRunning codeFixed in 5.7.12.
  27. December 2018AdvisoryCross-site scriptingFixed in 5.7.8.
  28. December 2018MinorCross-site scriptingFixed in 5.7.8. Needs a login on the site.
  29. August 2016AdvisoryA security flawFixed in 1.1.13.
  30. January 2013AdvisoryRunning codeFixed in 3.5.2.
  31. January 2013AdvisoryRunning codeFixed in 3.5.2.
  32. Date not knownAdvisoryA security flawFixed in 5.7.12.
  33. Date not knownAdvisoryRunning codeFixed in 3.5.2.

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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