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Prototype pollution in TanStack DB's select() query compiler allows low-privileged remote attackers to mutate Object.prototype by supplying dot-notation alias paths containing reserved JavaScript property names such as __proto__, prototype, or constructor. Versions up to 0.6.8 are confirmed affected via CPE cpe:2.3:a:tanstack:db. A publicly available exploit exists (GitHub issue #1584), though the vulnerability is not in CISA KEV. The CVSS 4.0 base score of 2.1 reflects low integrity impact scoped to the vulnerable system, but the downstream consequences of Object.prototype mutation in JavaScript runtimes can exceed what raw scoring conveys depending on application logic.
Prototype pollution in TanStack DB's select() query compiler allows low-privileged remote attackers to mutate Object.prototype by supplying dot-notation alias paths containing reserved JavaScript property names such as __proto__, prototype, or constructor. Versions up to 0.6.8 are confirmed affected via CPE cpe:2.3:a:tanstack:db. A publicly available exploit exists (GitHub issue #1584), though the vulnerability is not in CISA KEV. The CVSS 4.0 base score of 2.1 reflects low integrity impact scoped to the vulnerable system, but the downstream consequences of Object.prototype mutation in JavaScript runtimes can exceed what raw scoring conveys depending on application logic.