Vulnerability · Published Jan 16, 2026 · Assigned by GitHub_M
CVE-2026-23529Arbitrary File Read in Google BigQuery Sink connector
High 7.7
In plain English
A high-severity server-side request forgery in bigquery-connector-for-apache-kafka from Aiven-Open. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).
Official description
Kafka Connect BigQuery Connector is an implementation of a sink connector from Apache Kafka to Google BigQuery. Prior to 2.11.0, there is an arbitrary file read in Google BigQuery Sink connector. Aiven's Google BigQuery Kafka Connect Sink connector requires Google Cloud credential configurations for authentication to BigQuery services. During connector configuration, users can supply credential JSON files that are processed by Google authentication libraries. The service fails to validate externally-sourced credential configurations before passing them to the authentication libraries. An attacker can exploit this by providing a malicious credential configuration containing crafted credential_source.file paths or credential_source.url endpoints, resulting in arbitrary file reads or SSRF attacks.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Aiven-Open | bigquery-connector-for-apache-kafka | < 2.11.0 |
Weakness: CWE-73, CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
References
- https://github.com/Aiven-Open/bigquery-connector-for-apache-kafka/security/advisories/GHSA-3mg8-2g53-5gj4 x_refsource_CONFIRM
- https://github.com/Aiven-Open/bigquery-connector-for-apache-kafka/commit/20ea3921c6fe72d605a033c1943b20f49eaba981 x_refsource_MISC
- https://docs.cloud.google.com/support/bulletins#gcp-2025-005 x_refsource_MISC
- https://github.com/Aiven-Open/bigquery-connector-for-apache-kafka/releases/tag/v2.11.0 x_refsource_MISC