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CVE-2026-13252— RSS Aggregator by Feedzy <= 5.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'aspectRatio' Attribute

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.

themeisle RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator是themeisle公司的WordPress插件,用于将RSS Feed转换为文章、实现自动博客发布及聚合新闻和YouTube视频。 Themeisle RSS Aggregator by Feedzy 5.2.1及之前版本存在跨站脚本漏洞，该漏洞源于对'aspectRatio'属性输入清理和输出转义不足

CVSS 6.4 · Medium EPSS 0.35% · P26

Affected Version Matrix 1

VendorProduct Version RangeStatus
themeisle RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator ≤ 5.2.1 affected
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I. Basic Information for CVE-2026-13252

Vulnerability Information
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Vulnerability Title
RSS Aggregator by Feedzy <= 5.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'aspectRatio' Attribute
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 'aspectRatio' Attribute in all versions up to, and including, 5.2.1 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.
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
Vulnerability Title
Themeisle RSS Aggregator by Feedzy 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
themeisle RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator是themeisle公司的WordPress插件,用于将RSS Feed转换为文章、实现自动博客发布及聚合新闻和YouTube视频。 Themeisle RSS Aggregator by Feedzy 5.2.1及之前版本存在跨站脚本漏洞，该漏洞源于对'aspectRatio'属性输入清理和输出转义不足
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
themeisle RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator 0 ~ 5.2.1 -

II. Public POCs for CVE-2026-13252

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III. Intelligence Information for CVE-2026-13252

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Patches & Fixes for CVE-2026-13252 (1)

Vendor Advisories for CVE-2026-13252 (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-2026-13252

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