CVE-2026-39879: Syslog-NG

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Due to a missing sanitization call in [`afsql_dd_run_query`](https://github.com/syslog-ng/syslog-ng/blob/649e6e18e3459fb4467000a88dfb12fa97f9719c/modules/afsql/afsql.c#L219), syslog-ng before 4.12 are vulnerable to SQL injection from an untrusted source. This is not part of the default configuration, the SQL driver has to be manually configured. Fixes are in syslog-ng 4.12, syslog-ng Premium Edition 8.2 and syslog-ng Store Box 7.8

Affected products

• Syslog-NG Syslog-NG: before 4.12 (fixed in 4.12)

Published 2026-07-20. Last modified 2026-07-23.