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SVG Support

8known security flaws found in SVG Support
since January 2022

Safe from 2.5.17

Version 2.5.17 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, January 2022Minor: Cross-site scripting, February 2022Minor: Cross-site scripting, September 2022Minor: Cross-site scripting, November 2022Minor: Cross-site scripting, July 2024Minor: Cross-site scripting, February 2025Minor: Missing checks, February 2025Advisory: Cross-site scripting, July 202620222023202420252026

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
Every known flaw, newest first (8)
  1. July 2026AdvisoryCross-site scriptingFixed in 2.5.17. Needs a login on the site (Author+).
  2. February 2025MinorMissing checksFixed in 2.5.15. Needs a login on the site.
  3. February 2025MinorCross-site scriptingFixed in 2.5.11. Needs a login on the site.
  4. July 2024MinorCross-site scriptingFixed in 2.5.8. Needs a login on the site (Author+).
  5. November 2022MinorCross-site scriptingFixed in 2.5.2. Needs a login on the site.
  6. September 2022MinorCross-site scriptingFixed in 2.5. Needs a login on the site.
  7. February 2022MinorCross-site scriptingFixed in 2.5.9. No login needed.
  8. January 2022MinorCross-site scriptingFixed in 2.3.20. 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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