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CVE-2026-75850— ArcadeDB before 26.8.1 Per-Type ACL Bypass via Batch Handlers

Quick assessment

Affected

ArcadeData arcadedb

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Arcade Data ArcadeDB是Arcade Data组织的一款高性能原生多模型数据库。 Arcade Data ArcadeDB 26.8.1之前版本存在授权问题漏洞，该漏洞源于批量和时间序列HTTP处理器未绑定经过身份验证的主体（setCurrentUser），导致按类型ACL检查无法执行，可能允许具有数据库访问权限但权限受限的用户读取或写入未授权类型。

CVSS 4.2 · Medium EPSS 0.21% · P10 Updated Aug 19, 2026

Possible ATT&CK Techniques 2 AI

T1078 · Valid Accounts T1530 · Data from Cloud Storage

Affected Version Matrix 2

Vendor	Product	Version Range	Status
ArcadeData	arcadedb	`< 26.8.1`	affected
		`26.8.1`	unaffected

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I. Basic Information for CVE-2026-75850

Vulnerability Information

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Vulnerability Title

ArcadeDB before 26.8.1 Per-Type ACL Bypass via Batch Handlers

Source: CVE Program / CVE List V5

Vulnerability Description

ArcadeDB before 26.8.1 fails to bind the authenticated principal (setCurrentUser) on its batch and time-series HTTP handlers. Because no principal is bound on the worker thread, the engine's fine-grained per-type ACL layer (LocalBucket.checkPermissionsOnFile) does not execute for these handlers. In deployments that use per-type or per-group ACLs, a user with database access but only limited per-type permissions can read from and write to types they are not authorized to access by submitting requests to the batch/time-series endpoints. Deployments that rely solely on database-level access control are not affected.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

授权机制缺失

Source: CVE Program / CVE List V5

Vulnerability Title

Arcade Data ArcadeDB 授权问题漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
ArcadeData	arcadedb	0 ~ 26.8.1	-

II. Public POCs for CVE-2026-75850

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-75850

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Vendor Advisories for CVE-2026-75850 (1)

🔗 Batch/time-series HTTP handlers skip per-type ACL enforcement because no principal is bound · Advisory · ArcadeData/arcadedb · GitHub Read full article vendor-advisory

Other References for CVE-2026-75850 (1)

🔗 ArcadeDB before 26.8.1 Per-Type ACL Bypass via Batch Handlers | Advisories | VulnCheck third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-75850

Same Patch Batch · ArcadeData · 2026-08-18 · 14 CVEs total

CVE-2026-75843	9.9 CRITICAL	ArcadeDB before 26.8.1 Privilege Escalation via gRPC Transaction
CVE-2026-75851	9.9 CRITICAL	ArcadeDB before 26.8.1 Authentication Bypass via Async Command
CVE-2026-75854	9.8 CRITICAL	ArcadeDB Redis Wire-Protocol Plugin Missing Authentication
CVE-2026-75852	9.8 CRITICAL	ArcadeDB MongoDB wire protocol authentication bypass cross-database
CVE-2026-75853	8.8 HIGH	ArcadeDB Gremlin Wire Protocol Authorization Bypass Cross-Database
CVE-2026-75855	8.7 HIGH	ArcadeDB before 26.8.1 Path Traversal via create/drop database
CVE-2026-75842	7.7 HIGH	ArcadeDB before 26.8.1 Arbitrary File Read via LOAD CSV
CVE-2026-75840	7.5 HIGH	ArcadeDB before 26.8.1 Arbitrary File Read via Unescaped Regex
CVE-2026-75846	7.1 HIGH	ArcadeDB before 26.8.1 Unauthorized Function Deletion via DELETE FUNCTION
CVE-2026-75844	7.1 HIGH	ArcadeDB before 26.8.1 SSRF via IMPORT DATABASE validator bypass
CVE-2026-75845	6.3 MEDIUM	ArcadeDB 26.4.2 before 26.8.1 Authorization Bypass via set_server_setting
CVE-2026-75841	4.3 MEDIUM	ArcadeDB before 26.8.1 Denial of Service via range()
CVE-2026-75839	4.3 MEDIUM	ArcadeDB before 26.8.1 Information Disclosure via Cluster Endpoints

IV. Related Vulnerabilities

Same product: arcadedb

Same vendor: ArcadeData

Same weakness: CWE-862