CVE-2026-97395
HighCVSS 8.1Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
Apache Polaris allows an authenticated principal with permission to create or update Iceberg table properties to set FileIO client settings such as s3.endpoint in table metadata. In versions < 1.8.0, Polaris may use these settings to construct its server-side FileIO client, potentially redirecting storage traffic to a host chosen by the table writer and exposing authentication material.
Risk Assessment
Untrusted table writers can redirect server-side storage traffic to an endpoint of their choice, potentially leading to leakage of authentication credentials and compromise of data operations.
Recommendation
Upgrade Apache Polaris to version 1.8.0 or later. Additionally, configure catalog storage to override the endpoint to prevent table writers from setting it.
Other vulnerabilities in Apache Polaris
See all- CVE-2026-42811Critical
Apache Polaris is supposed to issue short-lived GCS credentials that only work for one table's files, but a crafted namespace or table name can cause those credentials to work across the configured bucket.
- CVE-2026-42810Critical
Apache Polaris accepts literal `*` characters in namespace and table names. When it later builds temporary S3 access policies for delegated table access, those same characters appear to be reused unescaped in S3 IAM resource patterns.
- CVE-2026-42809Critical
Apache Polaris can issue broad temporary ('vended') storage credentials during staged table creation before the effective table location has been validated or durably reserved. An attacker can choose a reachable target location, leading to unauthorized access to table data and metadata.
- CVE-2026-64640Medium
Apache Polaris did not consistently validate storage locations supplied during table and view registration. An authenticated principal with registration permissions could cause Polaris to use the catalog's storage credentials to read a caller-selected Iceberg metadata file before verifying it was within allowed locations, potentially disclosing limited information. Polaris could also accept registration metadata with references to external locations, but this did not cause reads.
Original NVD description (English source)
Apache Polaris allows an authenticated principal with permission to create or update Iceberg table properties to set FileIO client settings such as s3.endpoint in table metadata. In versions < 1.8.0, when Polaris performs server-side Iceberg operations, including commits and purges, it may use those settings to construct its (server-side) FileIO client. If the catalog storage configuration does not override the endpoint, Polaris can send storage requests to a host chosen by the table writer, using credentials scoped to the operation. This can redirect server-side storage traffic and expose request authentication material to the chosen endpoint. Deployments are affected when table writers are not trusted to configure server-side storage endpoints.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS