Shortcodes Ultimate <= 7.9.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via su_feed Shortcode Error Message
- ID
- WPSEC-2026-0260
- Plugin
- Shortcodes Ultimate – Content Elements (shortcodes-ultimate)
- Affected
- from 5.7.0 before 7.9.1
- Remediation
- Update to 7.9.1 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-22
- Attack surface
- Shortcodes Ultimate on WPSec AttackSurface
- Fix released
- Published
Description
The Shortcodes Ultimate plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the su_feed shortcode in versions 5.7.0 up to, and including, 7.9.0. This is due to the feed error returned by fetch_feed(), which includes response details from the remote server such as its Content-Type header, being printed by su_error_message() without escaping. Error messages are shown only to users allowed to use the shortcode generator (administrators by default), so this makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts that execute when such a user views an injected page.
References
- https://wpsec.com/vuln/WPSEC-2026-0260/
- https://plugins.svn.wordpress.org/shortcodes-ultimate/tags/7.9.1/
- https://wordpress.org/plugins/shortcodes-ultimate/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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