Databend up to 1.2.881 on HTTP Tenant client_session_manager.rs state_key authorization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k2.71+

Summaryinfo

A vulnerability was found in Databend up to 1.2.881 on HTTP. It has been declared as problematic. This vulnerability 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 results in authorization. This vulnerability is known as CVE-2026-13512. It is possible to launch the attack remotely. Furthermore, an exploit is available. The pull request to fix this issue awaits acceptance.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Databend up to 1.2.881 on HTTP. Affected is 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 with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. This is going to have an impact on confidentiality, integrity, and availability.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-13512. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept. The pull request to fix this issue awaits acceptance.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-639 / CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/28/2026 Advisory disclosed
06/28/2026 +0 days VulDB entry created
06/28/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: 19930
Status: Not defined
Confirmation: 🔒

CVE: CVE-2026-13512 (🔒)
GCVE (CVE): GCVE-0-2026-13512
GCVE (VulDB): GCVE-100-374520
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/28/2026 08:36
Changes: 06/28/2026 08:36 (59)
Complete: 🔍
Submitter: Dem000000
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #838874: Databend Labs Databend main branch commit 21377cd76bb1e84f92bfc9da1acc881b8841f1de; affected versions unknown CWE-639 Authorization Bypass Through User-Controlled Key (by Dem000000)

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