CVE-2026-1844

High

Published: 13 February 2026

Published

13 February 2026

Modified

15 April 2026

KEV Added

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Patch

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CVSS Score v3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS Score 0.0005 14.9th percentile

Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-1844 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Pixelyoursite (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 14.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-15 (Information Output Filtering).

Deeper analysis

CVE-2026-1844 is a stored cross-site scripting (XSS) vulnerability, classified under CWE-79, in the PixelYourSite PRO plugin for WordPress. It affects all versions up to and including 12.4.0.2 due to insufficient input sanitization and output escaping of the 'pysTrafficSource' and 'pys_landing_page' parameters. The vulnerability enables injection of arbitrary web scripts into pages, 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). It was published on 2026-02-13.

Unauthenticated attackers can exploit this vulnerability remotely with low attack complexity and no privileges or user interaction required. By submitting malicious payloads through the vulnerable parameters, attackers inject scripts that persist in the affected pages and execute in the context of any user accessing them, potentially compromising confidentiality and integrity with a changed scope.

Advisories from Wordfence (https://www.wordfence.com/threat-intel/vulnerabilities/id/0fa6a112-ee69-43eb-bded-daba2c2c4dc5?source=cve) and the plugin vendor (https://www.pixelyoursite.com/plugins/pixelyoursite-professional) detail the issue. Mitigation requires updating the PixelYourSite PRO plugin to a version beyond 12.4.0.2, as the vulnerability exists in all prior releases.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-7367

Vulnerability details

The PixelYourSite PRO plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pysTrafficSource' parameter and the 'pys_landing_page' parameter in all versions up to, and including, 12.4.0.2 due to insufficient input sanitization and output escaping. This makes it possible…

for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CWE(s): CWE-79

Related Threats

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 →

T1059.007 JavaScript Execution

Adversaries may abuse various implementations of JavaScript for execution.

attack.mitre.org →

Why these techniques?

Stored XSS in public-facing WordPress plugin directly enables remote exploitation of a web application (T1190) and arbitrary JavaScript execution in victim browsers (T1059.007).

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