CVE-2026-104735 Cross-site scripting in RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator
Authenticated contributors can inject arbitrary scripts via RSS feed titles in the Feedzy plugin, leading to stored XSS execution for other users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104735?
CVE-2026-104735 is a medium-severity cross-site scripting vulnerability in themeisle RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator, published on 10 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Feedzy Loop Block Feed URL / RSS <title> in all versions up to, and including, 5.2.10 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload is not neutralized at save time because post_content stores only a benign block reference to an external feed URL; the malicious HTML is injected at render time from the attacker-controlled RSS feed title, bypassing any save-time wp_kses filtering.
Weakness: CWE-79
Which versions are affected by CVE-2026-104735?
How do I fix CVE-2026-104735?
No fix has been published for CVE-2026-104735 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-104735 being exploited?
There is no known exploitation of CVE-2026-104735 in the wild and no public exploit code.
Sources
Also known as GHSA-j8xc-7f4h-xqfx.