Auth bypass in Joomla Joomla\!
CVE-2026-73337
Joomla! Core - [20260807] - MFA Authentication Bypass in Joomla 4.0.0-5.4.7 and 6.0.0-6.1.2 - Insufficient state checks lead to a vector that allows to bypass 2FA checks.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (37.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.001
Affected products
- Joomla Joomla\!
- Joomla! Project Cms — versions 4.0.0-5.4.6, 6.0.0-6.1.2
Weakness classification (CWE)
References
- developer.joomla.org/security-centre/20260807-core-mfa-authentication-bypass.ht…
- www.joomla.org/ (Product, product)
- developer.joomla.org/security-centre/1074-20260807-core-mfa-authentication-bypa… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-73337?
- CVE-2026-73337 is a high-severity vulnerability in Joomla Joomla\!, classified under Improper Authentication. CVSS score: 7.5/10. Published 2026-08-18.
- How severe is CVE-2026-73337?
- High severity. CVSS v3 base score is 7.5 out of 10.