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CVE-2026-81335— Baserow before 2.3.1 Unauthenticated Data Disclosure via Discarded Permission Check on Builder Data Sources

Quick assessment

Affected
Baserow Baserow
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.

Bram Baserow是Bram个人开发者开源的一款数据库管理平台。 Bram Baserow 2.3.1之前版本存在安全漏洞，该漏洞源于权限检查结果未生效，导致未经身份验证的攻击者可通过枚举数据源标识符访问应用构建器数据源，造成敏感数据泄露。

CVSS 7.5 · High EPSS 0.57% · P46

Possible ATT&CK Techniques 2 AI

T1079 T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
Baserow Baserow < 2.3.1 affected
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I. Basic Information for CVE-2026-81335

Vulnerability Information
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Vulnerability Title
Baserow before 2.3.1 Unauthenticated Data Disclosure via Discarded Permission Check on Builder Data Sources
Source: CVE Program / CVE List V5
Vulnerability Description
Baserow dispatches an Application Builder data source without acting on the result of its permission check. The dispatch and record-name views in backend/src/baserow/contrib/builder/api/data_sources/views.py are declared with a permission class that admits any caller, so a request carrying no credential reaches the handler. DataSourceService.dispatch_data_sources in backend/src/baserow/contrib/builder/data_sources/service.py then calls check_multiple_permissions without asking it to raise, and neither stores nor examines the mapping of denials it returns, so a denied check leaves execution to continue and the data source is dispatched whatever the caller's identity. The dispatch runs with the integration's own credentials, so an unauthenticated request naming a data source receives the rows and fields that source reads. Identifiers are small integers and can be enumerated. Version 2.3.1 passes raise_exception to the same call.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Bram Baserow 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bram Baserow是Bram个人开发者开源的一款数据库管理平台。 Bram Baserow 2.3.1之前版本存在安全漏洞，该漏洞源于权限检查结果未生效，导致未经身份验证的攻击者可通过枚举数据源标识符访问应用构建器数据源，造成敏感数据泄露。
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
Baserow Baserow 0 ~ 2.3.1 -

II. Public POCs for CVE-2026-81335

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III. Intelligence Information for CVE-2026-81335

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Patches & Fixes for CVE-2026-81335 (1)

Vendor Advisories for CVE-2026-81335 (1)

Vendor Pages for CVE-2026-81335 (2)

Other References for CVE-2026-81335 (1)

IV. Related Vulnerabilities

Same product: Baserow
Same vendor: Baserow
Same weakness: CWE-862

V. Comments for CVE-2026-81335

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