Auth bypass in Speed Optimizer
CVE-2026-111738
The Speed Optimizer WordPress plugin before 7.8.5 does not verify network-level privilege before applying an option change to the whole multisite network, nor restrict which option may be changed, allowing a site administrator who is not a Super Admin to create or overwrite network-wide options.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Speed Optimizer
Weakness classification (CWE)
References
- wpscan.com/vulnerability/e08044dc-c514-4e4a-bf3e-995dd2ad29b1/ (technical-description, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2026-111738?
- CVE-2026-111738 is a medium-severity vulnerability in Speed Optimizer, classified under Incorrect Authorization. CVSS score: 5.5/10. Published 2026-10-23.
- How severe is CVE-2026-111738?
- Medium severity. CVSS v3 base score is 5.5 out of 10.