OMGF | GDPR/DSGVO Compliant, Faster Google Fonts. Easy. <= 6.3.10 - Unauthenticated Stored Cross-Site Scripting via 's' Search Parameter in comments-atom Feed
Strategic Overview
- Status
- Patched in 6.3.11
- Affected Plugin
- OMGF | GDPR/DSGVO Compliant, Faster Google Fonts. Easy.
- Affected Version
<= 6.3.10- CVSS
- 7.2High
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2026-89417
At a glance
CVE-2026-89417 is a high-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the OMGF WordPress plugin, affecting versions <= 6.3.10. 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 6.3.11; sites on affected versions should update now. Disclosed October 2026, reported by uhcna.
Vulnerability Overview
The OMGF | GDPR/DSGVO Compliant, Faster Google Fonts. Easy. plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 's' Search Parameter via comments-atom Feed in all versions up to, and including, 6.3.10 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. Successful exploitation requires that the front-end server serves the retained .tmp file without a Content-Type or X-Content-Type-Options header, enabling MIME-sniffing browsers such as Chromium to execute the injected script — a condition present by default on many Apache and nginx/php-fpm deployments.
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')
Reaching this weakness in OMGF <= 6.3.10 takes no account at all. 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 OMGF the fix is 6.3.11: builds <= 6.3.10 are affected, anything from 6.3.11 onward is not.
Remediation
Update to version 6.3.11, or a newer patched version
How does WordSec protect against this?
Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: OMGF 6.3.11 closes this, and updating the plugin is the step that ends it.
- Firewall
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in OMGF | GDPR/DSGVO Compliant, Faster Google Fonts. Easy.
- 9.1CVE-2021-24638: OMGF <= 4.5.3 Path Traversal in REST API
CVE-2021-24638 - 8.6CVE-2023-6600: OMGF Unauthenticated Directory Deletion and XSS
CVE-2023-6600 - 8.1CVE-2021-24639: OMGF Subscriber+ Arbitrary File/Folder Deletion
CVE-2021-24639 - 7.5CVE-2026-91828: OMGF DoS
CVE-2026-91828 - 4.9CVE-2021-25021: OMGF <= 4.5.11 Arbitrary Folder Deletion
CVE-2021-25021
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