CVE-2026-10611 OTP bypass via plugin-based LDAP authentication in MISP when LDAP mixed authentication is enabled
Attackers with valid credentials can bypass mandatory OTP enforcement in MISP when LDAP mixed authentication is enabled, 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-2026-10611?
CVE-2026-10611 is a high-severity authentication bypass vulnerability in Misp-Project Misp, published on 2 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement. In deployments configured with LdapAuth.mixedAuth=true and Security.require_otp=true, users authenticated through an authentication plugin, such as LDAP, may have their authenticated session established during the application beforeFilter phase before the normal login flow enforces the OTP challenge.
As a result, an attacker with valid primary authentication credentials could bypass the required OTP step by authenticating through the plugin-backed login flow and then directly accessing another application URL instead of completing the OTP verification page. This allows access to the application as the affected user without providing a valid TOTP, HOTP, or email OTP code.
The issue affects configurations where plugin-based authentication is enabled and OTP is expected to be mandatory. The fix ensures that OTP requirements are checked immediately after plugin authentication and before the user session is established, redirecting users to the appropriate OTP challenge when required.
Weakness: CWE-287
Which versions are affected by CVE-2026-10611?
It affects 1 product.
Products include Misp-Project Misp.
How do I fix CVE-2026-10611?
No fix has been published for CVE-2026-10611 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-2026-10611 being exploited?
There is no known exploitation of CVE-2026-10611 in the wild and no public exploit code.
Other vulnerabilities in Misp-Project Misp
Sources
Also known as GHSA-679g-pp8v-jvg4.