CVE-2026-91828

OMGF < 6.3.11 - Unauthenticated DoS via do_optimize

Published Oct 2, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
The OMGF | GDPR/DSGVO Compliant, Faster Google Fonts. Easy. WordPress plugin before 6.3.11 does not require authentication or a valid nonce on an action that issues a slow server-side loopback request, allowing unauthenticated attackers to exhaust the site's PHP worker pool and make the entire site unavailable.

Analysis

AI-generated

Technical impact

This vulnerability is present in versions of the OMGF WordPress plugin before 6.3.11. By sending a specially constructed HTTP request that calls the do_optimize action, an attacker can trigger a long server‑side loopback request. Because the action bypasses all authentication and nonce checks, anyone on the public internet can invoke it. The repetitive request loop consumes PHP worker processes until the pool is exhausted, resulting in a denial of service that can render the entire WordPress site unavailable.

Affected Systems

The affected product is the OMGF WordPress plugin, also marketed as GDPR/DSGVO Compliant, Faster Google Fonts. Easy. All installations running a version earlier than 6.3.11 are vulnerable; newer releases contain the fix.

Risk and Exploitability

The EPSS score is < 1%, implying low likelihood of widespread exploitation, and the vulnerability is not listed in CISA’s KEV catalog, so there is no publicly known exploitation evidence. The CVSS score of 7.5 indicates a high severity. However, because the vulnerability does not require authentication and the resource‑intensive operation can be triggered by any remote attacker, exploitation is trivial for adversaries seeking to disrupt availability. If successful, the site can be taken offline for extended periods, potentially disrupting business and revenue.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest version of the OMGF plugin (6.3.11 or newer).
  • If upgrading cannot be performed immediately, configure the web server or reverse proxy to block unauthenticated requests to the do_optimize endpoint, or restrict it to authenticated administrators only.
  • Implement rate‑limiting or a web application firewall rule that limits the number of requests to this endpoint per minute from a single IP.

Generated by OpenCVE AI on October 2, 2026 at 15:25 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Wordpress-extensions
Wordpress-extensions omgf
Vendors & Products Wordpress-extensions
Wordpress-extensions omgf
Type Values Removed Values Added
Weaknesses CWE-284
Type Values Removed Values Added
Weaknesses CWE-400
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-284
Type Values Removed Values Added
Description The OMGF | GDPR/DSGVO Compliant, Faster Google Fonts. Easy. WordPress plugin before 6.3.11 does not require authentication or a valid nonce on an action that issues a slow server-side loopback request, allowing unauthenticated attackers to exhaust the site's PHP worker pool and make the entire site unavailable.
Title OMGF < 6.3.11 - Unauthenticated DoS via do_optimize
References
Weaknesses
  • CWE-400

    Uncontrolled Resource Consumption

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Oct 2, 2026, 10:54 AM
Reserved
Sep 15, 2026, 8:11 AM
Status
Deferred
Published
Oct 2, 2026, 6:16 AM
Modified
Oct 2, 2026, 6:00 PM