Improper Authorization in Apache Polaris - CVE-2026-64640
Published: August 25, 2026
Vulnerability identifier: #VU145157
CSH Severity: Low
CVSS v4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-64640
CWE-ID: CWE-285
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose limited information.
The vulnerability exists due to improper access control in the register endpoint when processing user-supplied storage locations during table or view registration. A remote user can supply a caller-selected Iceberg metadata file location to disclose limited information.
Exploitation requires a deployment using S3 credential vending, and the server-side read occurs only if the catalog's underlying storage credentials can read an object outside the allowed storage locations.
Affected software
Apache Polaris
How to mitigate CVE-2026-64640
Install security update from vendor's website.
Apache Polaris - update to 1.7.0