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CVE-2026-104735— RSS Aggregator by Feedzy <= 5.2.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via Feedzy Loop Block Feed URL / RSS <title>

Quick assessment

Affected
themeisle RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 插件 RSS Aggregator by Feedzy – Feed to Post、自动博客、新闻及 YouTube 视频源聚合器在 5.2.10 及更早版本中存在存储型跨站脚本（Stored Cross-Site Scripting, XSS）漏洞，该漏洞出现在 Feedzy 循环区块的源地址（Feed URL）或 RSS 字段中，原因是输入清理和输出转义不足。这使得具有贡献者级别（contributor-level）及以上权限的攻击者能够在页面中注入任意 Web 脚本，当用户访问包含注入内

CVSS 6.4 · Medium
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I. Basic Information for CVE-2026-104735

Vulnerability Information
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Vulnerability Title
RSS Aggregator by Feedzy <= 5.2.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via Feedzy Loop Block Feed URL / RSS <title>
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
themeisle RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator 0 ~ 5.2.10 -

II. Public POCs for CVE-2026-104735

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III. Intelligence Information for CVE-2026-104735

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Vendor Advisories for CVE-2026-104735 (1)

Other References for CVE-2026-104735 (2)

Other References for CVE-2026-104735 (1)

IV. Related Vulnerabilities

Same product: RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator
Same vendor: themeisle
Same weakness: CWE-79

V. Comments for CVE-2026-104735

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