CVE-2026-13252

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

2026-07-01 20:08

Strategic Overview

Status: Patched in 5.2.2
Affected Plugin: RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator
Affected Version: <= 5.2.1
CVSS: 6.4Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2026-13252

View all RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator vulnerabilities

At a glance

CVE-2026-13252 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the RSS Aggregator by Feedzy WordPress plugin, affecting versions <= 5.2.1. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 5.2.2; sites on affected versions should update now. Disclosed July 2026, reported by Wordfence PRISM.

Vulnerability Overview

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.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

RSS Aggregator by Feedzy <= 5.2.1 carries this weakness at aspectRatio, and reaching it takes an account at Contributor level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For RSS Aggregator by Feedzy the fix is 5.2.2: builds <= 5.2.1 are affected, anything from 5.2.2 onward is not.

Remediation

Update to version 5.2.2, or a newer patched version

How does WordSec protect against this?

An attacker needs Contributor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: RSS Aggregator by Feedzy 5.2.2 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-13252 https://www.wordfence.com/threat-intel/vulnerabilities/id/d402b7d1-3c12-4bdd-8ff3-e58d5501f0c0 https://nvd.nist.gov/vuln/detail/CVE-2026-13252

Related records

Same weakness class

Other vulnerabilities in RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator

CVSS Vector

6.4

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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