SSRF in Aiven-Open Bigquery-Connector-For-Apache-Kafka
CVE-2026-23529
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.
EPSS: 0.004 (30.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.
Affected products
- Aiven-open Bigquery-connector-for-apache-kafka — versions < 2.11.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-23529?
- CVE-2026-23529 is a high-severity vulnerability in Aiven-Open Bigquery-Connector-For-Apache-Kafka, classified under External Control of File Name or Path. CVSS score: 7.7/10. Published 2026-01-16.
- How severe is CVE-2026-23529?
- High severity. CVSS v3 base score is 7.7 out of 10.