Auth bypass in Charlycharm Speedup Optimization
CVE-2026-4127
The Speedup Optimization plugin for WordPress is vulnerable to Missing Authorization in all versions up to and including 1.5.9. The `speedup01_ajax_enabled()` function, which handles the `wp_ajax_speedup01_enabled` AJAX action, does not pe…
Vulnerability class: Broken Access Control
EPSS: 0.000 (13.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Charlycharm Speedup Optimization — versions 0
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/3f37c650-af0d-4474-9c1b-7f8d3…
- plugins.trac.wordpress.org/browser/speedup-optimization/trunk/speedup-optimizat…
- plugins.trac.wordpress.org/browser/speedup-optimization/tags/1.5.9/speedup-opti…
- plugins.trac.wordpress.org/browser/speedup-optimization/trunk/speedup-optimizat…
- plugins.trac.wordpress.org/browser/speedup-optimization/tags/1.5.9/speedup-opti…
Frequently asked questions
- What is CVE-2026-4127?
- CVE-2026-4127 is a medium-severity vulnerability in Charlycharm Speedup Optimization, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-03-21.
- How severe is CVE-2026-4127?
- Medium severity. CVSS v3 base score is 4.3 out of 10.