Plugins · formstack · data as of 2026-11-04
Is Formstack Online Forms safe? Known vulnerabilities and latest version
- Latest version
- 2.0.2
- Last updated
- 2019-04-12
- Active installs
- 1,000+
- Known issues on record
- 1
- Unpatched in latest
- 1
- Tested up to WP
- 5.1.28
This plugin allows you to easily embed Web forms built with Formstack's online form builder into your sidebar, pages, and posts. — by mmattax
What to do
- There is no fixed version yet. If you can live without Formstack Online Forms for now, deactivate it and delete it until the developer ships a fix.
- If you must keep it, limit who can log in (remove unused accounts, especially low-level ones) and put a web application firewall in front of the site.
- Watch for an update: get an email when this page changes.
- If you ran a vulnerable version and something looks off (spam pages, strange admins, redirects), run the free scan, or have us clean it: Emergency Cleanup, $499.
With WP-CLI: wp plugin get formstack --field=version shows what you run; wp plugin update formstack updates it.
Check your version
Known vulnerabilities
1 on record, newest first. “Affected” is the version range the source gives; “fixed in” is the version the source names, or (marked *) the first wordpress.org release after the last affected version.
medium 5.3 affects latest 2.0.2 CVE-2025-62738 · published 2025-12-09
Missing authorization check in Formstack Online Forms (2.0.2 and older)
- Affected
- 2.0.2 and older
- Fixed in
- no fix listed yet
- Access needed (per CVSS)
- No login needed
- Range from
- CVE record (the advisory publisher) · score by Patchstack
Details from the advisory
Missing Authorization vulnerability in mmattax Formstack Online Forms formstack allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Formstack Online Forms: from n/a through <= 2.0.2.
Recent activity
- 2019-04-12 — latest release on wordpress.org (2.0.2).
- 2025-12-09 — Missing authorization check disclosed (CVE-2025-62738), no fix listed yet.
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Browse vulnerabilities
Types found in this plugin: Missing authorization (1)
Where this data comes from
- Version, last update, installs: wordpress.org/plugins/formstack (Plugins API), fetched 2026-11-04.
- Vulnerabilities: NIST National Vulnerability Database (NVD), checked 2026-11-04. This product uses data from the NVD API but is not endorsed or certified by the NVD.
- Each record links to its CVE page and to the original advisory (Wordfence, Patchstack or WPScan) where there is one. We only list a CVE here when its references or its advisory name this exact plugin, so a few real issues may be missing; none should be about a different plugin. Spot an error? Email Daniel.
Badge for your site or docs (states facts with a date, not a verdict):
<a href="https://laskyr.com/plugins/formstack"><img src="https://laskyr.com/plugins/formstack/badge.svg" alt="Formstack Online Forms vulnerability status"></a>