# RSS Aggregator by Feedzy <= 5.2.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via Loop Block

- **ID:** WPSEC-2026-0604
- **Plugin:** RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator (`feedzy-rss-feeds`), https://wordpress.org/plugins/feedzy-rss-feeds/
- **Affected versions:** from 5.0.0 before 5.2.11
- **Fixed in:** 5.2.11 (Update to 5.2.11 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 Medium, affected versions Medium (as of 2026-10-07)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/feedzy-rss-feeds
- **Fix released:** 2026-10-06
- **Published:** 2026-10-07
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0604/

## Description

The RSS Aggregator by Feedzy plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Feedzy Loop block in versions 5.0.0 up to, and including, 5.2.10. This is due to the block inserting values from the fetched feed, such as the item title, link and content, into its template's magic tags without output escaping. This makes it possible for authenticated attackers with contributor-level access and above to point the block at a feed they control and inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

## References

- https://wpsec.com/vuln/WPSEC-2026-0604/
- https://plugins.svn.wordpress.org/feedzy-rss-feeds/tags/5.2.11/
- https://wordpress.org/plugins/feedzy-rss-feeds/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0604/

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.