CVE-2026-15616 Local MFA not enforced during SSO sign-in
Attackers can bypass second-factor authentication during SSO sign-in, gaining unauthorized access to user accounts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15616?
CVE-2026-15616 is a critical authentication bypass vulnerability in Logto, published on 23 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Logto does not enforce locally configured MFA during SSO authentication, allowing users to bypass second-factor requirements and grants unauthorized access.
Weakness: CWE-308
Which versions are affected by CVE-2026-15616?
How do I fix CVE-2026-15616?
No fix has been published for CVE-2026-15616 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-15616 being exploited?
There is no known exploitation of CVE-2026-15616 in the wild and no public exploit code.
Sources
Also known as GHSA-cv5x-2gg8-4hc7.