CVE Catalog

CVE-2026-92287

HighCVSS 8.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.35%

29th percentile - higher than 29% of all known CVEs

Summary

The vulnerability in Apache C++ Parquet and PyArrow versions 4.0.0 to 25.0.1 involves pass-through of unvalidated KMS URLs to KMS clients. If the user does not leverage application control for this parameter, a file-controlled KMS URL is forwarded to a pluggable KmsClient implementation, potentially sending a KMS token to a malicious host.

Risk Assessment

This may lead to leakage of KMS tokens to a malicious host, potentially enabling unauthorized access to encrypted data.

Recommendation

It is recommended to upgrade to version 26.0.0, which disables this behavior by default, or specify the KMS URL in the KmsConnectionConfig when reading files and ensure KmsClient implementations validate received KMS URLs.

Related vulnerabilities

Original NVD description (English source)

Pass-through of unvalidated KMS URLs to KMS clients in Apache C++ Parquet and PyArrow versions 4.0.0 to 25.0.1. This affects users who read Parquet files and configure Parquet decryption properties with a KmsClient implementation. On the reader side, the KMS URL can be application-controlled (specified in the KmsConnectionConfig) 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 KMS implementation does not perform host validation and makes use of the provided KMS URL, a KMS token can be sent to a malicious host set by an attacker in the file.  Users are recommended to upgrade to version 26.0.0, which disables this behavior by default and requires that users opt-in to it by enabling the read_kms_url flag in the DecryptionConfiguration. Users of affected versions are recommended to either specify the KMS URL in the KmsConnectionConfig when reading files, or ensure any KmsClient implementations validate received KMS URLs. Users that opt-in to file-controlled KMS URLs in version 26.0.0 and later must ensure KmsClients validate KMS URLs.

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