CVE-2026-42809— Apache Polaris: staged table creation could vend storage credentials for unvalidated locations

Apache Polaris: staged table creation could vend storage credentials for unvalidated locations

Apache Polaris can issue broad temporary ("vended") storage credentials during staged table creation before the effective table location has been validated or durably reserved. Those temporary credentials are meant to limit the scope of accessible table data and metadata, but this scope limitation becomes attacker- directed because the attacker can choose a reachable target location. In the confirmed variant, if the caller supplies a custom `location` during stage create and requests credential vending, Apache Polaris uses that location to construct delegated storage credentials immediately. The stage-create path itself neither runs the normal location validation nor the overlap checks before those credentials are issued. Closely related to that, the staged-create flow also accepts `write.data.path` / `write.metadata.path` in the request properties and feeds those location overrides into the same effective table location set used for credential vending. Those fields are secondary to the main custom-`location` exploit, but they are still attacker-influenced location inputs that should be validated before any credentials are issued.

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

授权机制缺失

Apache Polaris 输入验证错误漏洞

Apache Polaris是Apache基金会的一个数据管理与查询服务组件。 Apache Polaris存在输入验证错误漏洞，该漏洞源于在阶段表创建过程中未验证或持久保留有效表位置即发放临时存储凭据，可能导致攻击者选择可访问的目标位置。

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