CVE-2026-1216

High

Published: 17 February 2026

Published

17 February 2026

Modified

15 April 2026

KEV Added

—

Patch

—

CVSS Score 7.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS Score 0.0017 38.3th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-1216 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Wordpress (inferred from references). Its CVSS base score is 7.2 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 38.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique.

Threat & Defense Details

Likely Mitigating ControlsAI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing

addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

SI-10 Information Input Validation

addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

SI-15 Information Output Filtering

addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1189 Drive-by Compromise Initial Access

Adversaries may gain access to a system through a user visiting a website over the normal course of browsing.

attack.mitre.org →

Why these techniques?

Reflected XSS in public-facing WordPress plugin directly enables exploitation of web apps (T1190) and supports drive-by script execution via malicious links (T1189).

Confidence: MEDIUM · MITRE ATT&CK Enterprise v18.1

NVD Description

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.

Deeper analysisAI

CVE-2026-1216 is a reflected cross-site scripting (XSS) vulnerability in the RSS Aggregator plugin for WordPress, affecting all versions up to and including 5.0.10. The flaw stems from insufficient input sanitization and output escaping of the user-supplied 'template' parameter, enabling arbitrary web script injection. It is classified under CWE-79 with a CVSS v3.1 base score of 7.2 (AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N).

Unauthenticated attackers can exploit this vulnerability over the network with low complexity and no privileges by crafting malicious requests targeting the 'template' parameter. Successful exploitation requires tricking a user into performing an action, such as clicking a specially crafted link, which injects and executes arbitrary scripts in the victim's browser context, potentially leading to session hijacking, data theft, or further site compromise given the changed scope (S:C).

Mitigation details are available in advisories from Wordfence and WordPress plugin trac repositories, including code changes in DisplaysStore.php at line 106 and a patch via changeset 3439384 in the trunk repository, recommending immediate updates beyond version 5.0.10.