XSS in Themeisle Rss Aggregator By Feedzy – Feed To Post, Autoblogging, News & Youtube Video Feeds

CVE-2026-104735

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published .

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-104735?
CVE-2026-104735 is a medium-severity vulnerability in Themeisle Rss Aggregator By Feedzy – Feed To Post, Autoblogging, News & Youtube Video Feeds, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-10-10.
How severe is CVE-2026-104735?
Medium severity. CVSS v3 base score is 6.4 out of 10.