Auth bypass in All-In-One Security (Aios)
CVE-2026-111739
The Two Factor Authentication WordPress plugin before 1.17.0, All-In-One Security (AIOS) WordPress plugin before 5.5.0 do not bind the account whose two-factor code is verified to the account being authenticated, allowing an attacker who knows a victim's password and holds their own two-factor-enabled account to satisfy the victim's second-factor check with their own code and obtain the victim's session.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (7.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
- All-In-One Security (Aios)
- Two Factor Authentication
Weakness classification (CWE)
References
- wpscan.com/vulnerability/32371146-ddd8-4cb1-8a80-65de2d25319f/ (technical-description, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2026-111739?
- CVE-2026-111739 is a high-severity vulnerability in All-In-One Security (Aios), classified under Improper Authentication. CVSS score: 7.5/10. Published 2026-10-29.
- How severe is CVE-2026-111739?
- High severity. CVSS v3 base score is 7.5 out of 10.