Plugins · instant-popup-builder · data as of 2026-11-04
Is Instant Popup Builder safe? Known vulnerabilities and latest version
- Latest version
- 2.0.4
- Last updated
- 2026-10-14
- Active installs
- 100+
- Known issues on record
- 1
- Unpatched in latest
- 0
- Tested up to WP
- 7.1.4 · PHP 7.4+
Launch professional, WordPress-native popups for offers, announcements and email signups without a hosted SaaS account or visitor limits. — by Seventh Sky
What to do
- Update to the latest version (2.0.4). Anything older than 1.1.8 has at least one known issue listed below. Dashboard → Updates, or Plugins → “update now”.
- If you cannot update right away, deactivate it until you can.
- Turn on auto-updates for it: Plugins → “Enable auto-updates” on its row.
- If you ran a vulnerable version and something looks off (spam pages, strange admins, redirects), run the free scan.
With WP-CLI: wp plugin get instant-popup-builder --field=version shows what you run; wp plugin update instant-popup-builder 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 CVE-2026-3475 · published 2026-03-19
Missing authorization check in Instant Popup Builder (1.1.7 and older)
- Affected
- 1.1.7 and older
- Fixed in
- 1.1.8 *
- Access needed (per CVSS)
- No login needed
- Range from
- CVE record (the advisory publisher) · score by Wordfence
Details from the advisory
The Instant Popup Builder plugin for WordPress is vulnerable to Unauthenticated Arbitrary Shortcode Execution in all versions up to and including 1.1.7. This is due to the handle_email_verification_page() function constructing a shortcode string from user-supplied GET parameters (token, email) and passing it to do_shortcode() without properly sanitizing square bracket characters, combined with missing authorization checks on the init hook. While sanitize_text_field() and esc_attr() are applied, neither function strips or escapes square bracket characters ([ and ]). WordPress's shortcode regex uses [^\]\/]* to match content inside shortcode tags, meaning a ] character in the token value prematurely closes the shortcode tag. This makes it possible for unauthenticated attackers to inject and execute arbitrary registered shortcodes by crafting a malicious token parameter containing ] followed by arbitrary shortcode syntax.
NVD CVE-2026-3475Wordfence advisoryCode change (fix)Plugin source
Recent activity
- 2026-10-14 — latest release on wordpress.org (2.0.4).
- 2026-03-19 — Missing authorization check disclosed (CVE-2026-3475), fixed in 1.1.8.
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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/instant-popup-builder (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/instant-popup-builder"><img src="https://laskyr.com/plugins/instant-popup-builder/badge.svg" alt="Instant Popup Builder vulnerability status"></a>