CVE-2023-30963: Stored XSS in Foundry Slate Query Dropdown menu

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-07-10 · updated 2026-06-17
Weakness: CWE-82

Description

A security defect was discovered in Foundry Frontend which enabled users to perform Stored XSS attacks in Slate if Foundry's CSP were to be bypassed. This defect was resolved with the release of Foundry Frontend 6.229.0. The service was rolled out to all affected Foundry instances. No further intervention is required.

Affected products

Palantir Foundry Frontend: before 6.229.0 — fixed in 6.229.0

How to fix

Upgrade to a fixed version: Palantir Foundry Frontend 6.229.0. Check the vendor advisory for mitigations.

References

https://palantir.safebase.us/?tcuUid=3c6b63b7-fb67-4202-a94a-9c83515efb8a
https://palantir.safebase.us/?tcuUid=3c6b63b7-fb67-4202-a94a-9c83515efb8a

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