CVE-2026-13512: Databend Tenant client_session_manager.rs state_key authorization

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-28 · updated 2026-06-30
Weakness: CWE-285

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.

Affected products

Databend: 1.2.881

References

https://github.com/databendlabs/databend/issues/19930
https://github.com/databendlabs/databend/pull/19931
https://vuldb.com/cve/CVE-2026-13512
https://vuldb.com/submit/838874
https://vuldb.com/vuln/374520
https://vuldb.com/vuln/374520/cti

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