VerzuimSignaal is currently unavailable. We have taken down our system out of precaution, due to global PHP2Shell vulnerabilities.

The vulnerabilities need to be patched. The PHP team has scheduled the release for 21 Oct 2026 at 14:00 UTC (16:00 CEST).

For the latest updates, see: https://cert.europa.eu/publications/security-advisories/2026-018

Currently we have no signs of any unauthorised access to our systems.

We’re available via our support desk should you have any questions.