CVE-2026-104735
RSS Aggregator by Feedzy <= 5.2.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via Feedzy Loop Block Feed URL / RSS <title>
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.
INFO
Published Date :
Oct. 10, 2026, 5:16 a.m.
Last Modified :
Oct. 13, 2026, 1:30 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Feedzy plugin to the latest version.
- Verify feed URL and RSS title sanitization.
- Implement strict output escaping on rendered content.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-104735.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-104735 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-104735
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-104735 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-104735 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 11, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-104735', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-11T12:17:38.897732Z'} -
New CVE Received by [email protected]
Oct. 10, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Added CWE CWE-79 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/104xxx/CVE-2026-104735.json">CVE-2026-104735</a> Added Reference https://downloads.wordpress.org/plugin/feedzy-rss-feeds.5.2.11.zip Added Reference https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.2.10/includes/abstract/feedzy-rss-feeds-admin-abstract.php#L1758 Added Reference https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.2.10/includes/gutenberg/feedzy-rss-feeds-loop-block.php#L207 Added Reference https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.2.10/includes/gutenberg/feedzy-rss-feeds-loop-block.php#L241 Added Reference https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.2.10/includes/gutenberg/feedzy-rss-feeds-loop-block.php#L262 Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/a15a6cf2-aa7d-454c-83d2-9d74ce4505be?source=cve