Apache Polaris up to 1.7.x FileIO Client server-side request forgery

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Apache Polaris up to 1.7.x. Impacted is an unknown function of the component FileIO Client. Performing a manipulation results in server-side request forgery. This vulnerability is known as CVE-2026-97395. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apache Polaris up to 1.7.x. It has been classified as problematic. This affects an unknown functionality of the component FileIO Client. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality. The summary by CVE is:

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.

The advisory is shared at lists.apache.org. This vulnerability is uniquely identified as CVE-2026-97395 since 09/24/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/29/2026).

Upgrading to version 1.8.0 eliminates this vulnerability.

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Productinfo

Vendor

• Apache

Name

• Polaris

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7

License

• open-source

Website

• Vendor: https://www.apache.org/

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