--- title: "CVE-2026-89417: OMGF | GDPR/DSGVO Compliant, Faster Google Fonts. Easy. - Stored XSS" description: "OMGF | GDPR/DSGVO Compliant, Faster Google Fonts. Easy. WordPress plugin <= 6.3.10 contains a stored XSS caused by insufficient input sanitization and output escaping in 's' Search Parameter via comments-atom Feed, letting unauthenticated attackers execute arbitrary scripts, exploit requires front-end server serving .tmp files without proper Content-Type headers." url: https://panop.io/threat-heartbeat/CVE-2026-89417/ --- # CVE-2026-89417 OMGF | GDPR/DSGVO Compliant, Faster Google Fonts. Easy. - Stored XSS OMGF | GDPR/DSGVO Compliant, Faster Google Fonts. Easy. WordPress plugin <= 6.3.10 contains a stored XSS caused by insufficient input sanitization and output escaping in 's' Search Parameter via comments-atom Feed, letting unauthenticated attackers execute arbitrary scripts, exploit requires front-end server serving .tmp files without proper Content-Type headers. CVSS base score 7.2 /10 High CISA KEV Not listed Public exploit None known EPSS 0.25% chance of exploitation in 30 days [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89417) ## Details Type Stored XSS Impact Stored XSS CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N Published 7 October 2026 Updated 15 October 2026 Weakness [CWE-79](https://cwe.mitre.org/data/definitions/79.html) ## Vendor fix Update to a version later than 6.3.10 or the latest available version. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-89417](https://nvd.nist.gov/vuln/detail/CVE-2026-89417) - [https://www.wordfence.com/threat-intel/vulnerabilities/id/cd760ff9-fe72-44d6-a5f0-212a20dd2a51?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/cd760ff9-fe72-44d6-a5f0-212a20dd2a51?source=cve) - [https://plugins.trac.wordpress.org/browser/host-webfonts-local/tags/6.3.10/src/Download.php#L78](https://plugins.trac.wordpress.org/browser/host-webfonts-local/tags/6.3.10/src/Download.php#L78) - [https://plugins.trac.wordpress.org/browser/host-webfonts-local/tags/6.3.10/src/Frontend/Process.php#L411](https://plugins.trac.wordpress.org/browser/host-webfonts-local/tags/6.3.10/src/Frontend/Process.php#L411) - [https://plugins.trac.wordpress.org/browser/host-webfonts-local/tags/6.3.10/src/Frontend/Process.php#L663](https://plugins.trac.wordpress.org/browser/host-webfonts-local/tags/6.3.10/src/Frontend/Process.php#L663) - [https://plugins.trac.wordpress.org/browser/host-webfonts-local/tags/6.3.10/src/Optimize.php#L159](https://plugins.trac.wordpress.org/browser/host-webfonts-local/tags/6.3.10/src/Optimize.php#L159) - [https://plugins.trac.wordpress.org/browser/host-webfonts-local/tags/6.3.10/src/Optimize.php#L411](https://plugins.trac.wordpress.org/browser/host-webfonts-local/tags/6.3.10/src/Optimize.php#L411) - [https://plugins.trac.wordpress.org/changeset/3707539/host-webfonts-local/trunk/src/Frontend/Process.php](https://plugins.trac.wordpress.org/changeset/3707539/host-webfonts-local/trunk/src/Frontend/Process.php) - [https://plugins.trac.wordpress.org/changeset?reponame=&new=3707539%40host-webfonts-local%2Ftags%2F6.3.11&old=3641590%40host-webfonts-local%2Ftags%2F6.3.10](https://plugins.trac.wordpress.org/changeset?reponame=&new=3707539%40host-webfonts-local%2Ftags%2F6.3.11&old=3641590%40host-webfonts-local%2Ftags%2F6.3.10) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)