CVE-2026-13512 Databend Tenant client_session_manager.rs state_key authorization
Remote attackers can bypass authorization in Databend's tenant session manager, potentially accessing unauthorized resources.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-13512?
CVE-2026-13512 is a medium-severity authentication bypass vulnerability in Databend, published on 28 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was identified in Databend up to 1.2.881 on HTTP. This affects the function ClientSessionManager::state_key of the file src/query/service/src/servers/http/v1/session/client_session_manager.rs of the component Tenant Handler. The manipulation leads to authorization bypass. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The pull request to fix this issue awaits acceptance.
Which versions are affected by CVE-2026-13512?
How do I fix CVE-2026-13512?
No fix has been published for CVE-2026-13512 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-2026-13512 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13512 exists.
Sources
Also known as GHSA-m84g-jvj9-9qg6.