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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.

Baserow 在调度（dispatch）Application Builder 数据源时，没有根据权限检查的结果采取任何措施。 中的 dispatch 和 record-name 视图所声明的权限类允许任意调用者通过，因此未携带凭证的请求也能到达处理函数。 中的 调用了 ，但并未要求其抛出异常，也未存储或检查其返回的拒绝映射。因此，即使权限检查被拒绝，执行流程仍会继续，无论调用者身份如何，数据源都会被调度。该调度过程使用集成（integration）自身的凭证运行，因此未认证的请求只需指定数据源名称，即可获取该数

CVSS 7.5 · High

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

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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