CVE-2026-1216

RSS Aggregator <= 5.0.10 - Reflected Cross-Site Scripting via 'template' Parameter

2026-02-16 20:31
zer0gh0st

Strategic Overview

Status
Patched in 5.0.11
Affected Plugin
WP RSS Aggregator – RSS Import, Feed to Post, Autoblogging, AI Content
Affected Version
<= 5.0.10
CVSS
7.2High
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2026-1216
View all WP RSS Aggregator – RSS Import, Feed to Post, Autoblogging, AI Content vulnerabilities

At a glance

CVE-2026-1216 is a high-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the WP RSS Aggregator WordPress plugin, affecting versions <= 5.0.10. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 5.0.11; sites on affected versions should update now. Disclosed February 2026, reported by zer0gh0st.

Vulnerability Overview

The RSS Aggregator plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'template' parameter in all versions up to, and including, 5.0.10 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

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 privileges on the target site, and no interaction from a victim user.

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

WP RSS Aggregator <= 5.0.10 carries this weakness at template, and reaching it takes a caller who can reach the endpoint. 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 WP RSS Aggregator the fix is 5.0.11: builds <= 5.0.10 are affected, anything from 5.0.11 onward is not.

Remediation

Update to version 5.0.11, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to WP RSS Aggregator: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WP RSS Aggregator 5.0.11 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-1216https://www.wordfence.com/threat-intel/vulnerabilities/id/47a10dd4-515c-42d9-82ea-c84f8f7574c5https://nvd.nist.gov/vuln/detail/CVE-2026-1216

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C