CVE Catalog

CVE-2026-73334

HighCVSS 8.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.38%

31th percentile - higher than 31% of all known CVEs

Summary

In Apache Parquet versions 1.12 to 1.18, in the org.apache.parquet.crypto.keytools package, there is a vulnerability where if the user does not leverage application control for the KMS URL parameter, a file-controlled KMS URL is forwarded to a pluggable KmsClient implementation. If the implementation does not perform host validation, a KMS token can be sent to a malicious host set by an attacker in the file.

Risk Assessment

An attacker could intercept KMS tokens, potentially leading to confidentiality breach of data encrypted by Parquet.

Recommendation

Before upgrading, it is recommended to leverage application control for the KMS URL parameter in readers. After upgrading to version 1.19 or later, file-controlled KMS URL is disabled by default; enable it only with validation and authentication.

Related vulnerabilities

Original NVD description (English source)

Potential problem for users of the org.apache.parquet.crypto.keytools package in Apache Parquet, versions 1.12 to 1.18. This package enables users to encrypt Parquet files via an envelope encryption mechanism that wraps (encrypts) data keys via a Key Management Service (KMS).  On the reader side, the KMS URL can be application-controlled or file-controlled. If the user does not leverage application control for this parameter, a file-controlled KMS URL is forwarded to a pluggable KmsClient implementation. If the pluggable implementation does not perform host validation, a KMS token can be sent to a malicious host set by an attacker in the file. Before the problem is fixed, users are recommended to leverage application control for KMS URL parameter in readers (versions 1.12-1.18). After the problem is fixed (presumably in version 1.19), the upgrade will disable file-controlled KMS URL by default. Users of the KMS URL parameter  will have two options then: leverage application control for KMS URL parameter in readers, or enable file-controlled KMS URL (via a new app parameter). The latter option will explicitly require (in the new parameter documentation) to validate the KMS URL and use authentication in the custom implementation of the KMS client plug in.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS