Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-8853

4.4 · MEDIUM

The MW WP Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'memo' parameter in all versions up to, and including, 5.1.3 due to insufficient input sanitization and outp…

Published Jun 10, 2026CWE-79EPSS 0.33%

Overview

CVE-2026-8853 is a medium-severity vulnerability. It was published on June 10, 2026 and has a CVSS 3.1 base score of 4.4 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

The MW WP Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'memo' parameter in all versions up to, and including, 5.1.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Because the memo value is stored via update_post_meta() rather than wp_insert_post(), WordPress's built-in kses and unfiltered_html protections do not apply, allowing attackers to break out of the textarea element via injected closing tags regardless of role-based content filtering.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.0/classes/controllers/class.contact-data.php#L134Refplugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.0/templates/contact-data/detail.php#L77Refplugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.3/classes/controllers/class.contact-data.php#L134Refplugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.3/templates/contact-data/detail.php#L77Refplugins.trac.wordpress.org/changeset?old_path=mw-wp-form/tags/5.1.3&new_path=mw-wp-form/tags/5.1.4Refwww.wordfence.com/threat-intel/vulnerabilities/id/2a6dfdec-c1c6-4300-ab0a-9fd1c550d09f?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-8853?

CVE-2026-8853 is a medium-severity vulnerability. It was published on June 10, 2026 and has a CVSS 3.1 base score of 4.4 (MEDIUM).

How severe is CVE-2026-8853?

This vulnerability has a CVSS 3.1 base score of 4.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-8853?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-8853?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-8853 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related MEDIUM CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999