CVE-2026-39155 | Knot DNS up to 3.4.9/3.5.3 mod-onlinesign input validation

July 23, 2026 Yanac

A vulnerability described as critical has been identified in Knot DNS up to 3.4.9/3.5.3. Affected by this vulnerability is an unknown functionality of the component mod-onlinesign. The manipulation results in improper input validation.

This vulnerability is known as CVE-2026-39155. It is possible to launch the attack remotely. No exploit is available.

Upgrading the affected component is recommended.VulDB Recent EntriesRead More