# Action Network <= 1.8.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via actionnetwork_list and actionnetwork_calendar Shortcode Attributes

- **ID:** WPSEC-2026-0744
- **Plugin:** Organizers Embed – Action Network for WordPress (`wp-action-network`), https://wordpress.org/plugins/wp-action-network/
- **Affected versions:** all versions before 1.9.0
- **Fixed in:** 1.9.0 (Update to 1.9.0 or later.)
- **Severity:** Medium 6.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-79
- **Usage among sites WPSec scans:** plugin Low, affected versions None seen (as of 2026-10-10)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/wp-action-network
- **Fix released:** 2026-10-09
- **Published:** 2026-10-10
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0744/

## Description

The Action Network for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'container_element', 'item_element' and 'link_format' attributes of the actionnetwork_list and actionnetwork_calendar shortcodes in all versions up to, and including, 1.8.5, due to insufficient input sanitization and output escaping. The element attributes are only passed through sanitize_key(), which accepts 'script'. The link format is inserted unescaped into an href attribute. This makes it possible for authenticated attackers with Contributor-level access and above to inject arbitrary web scripts into pages that execute whenever a user opens an injected page.

## References

- https://wpsec.com/vuln/WPSEC-2026-0744/
- https://plugins.svn.wordpress.org/wp-action-network/tags/1.9.0/
- https://wordpress.org/plugins/wp-action-network/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0744/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.