The InboxHandlingService logs the full content of every incoming inbox message at INFO level (logger.info("Received message: {}", message)). Inbox messages are wrappers around outbox message data, which can contain highly sensitive information such as personal data (PII), citizen identifiers (BSN), and case details.
This data is exposed to: - Anyone with access to application logs (stdout/log files) - Any Valtimo user with the admin role, through the logging module in the Admin UI
com.ritense.inbox.InboxHandlingService#handle in the inbox module.
Fixed in 13.22.0 via commit f16a1940ba (PR #497, tracking issue gzac-issues#653). The log statement was downgraded from INFO to DEBUG and the message payload was removed from the log output.
For versions before 13.22.0, consider:
- Restricting access to application logs
- Adjusting the log level for com.ritense.inbox to WARN or higher in your application configuration
{
"nvd_published_at": "2026-04-16T22:16:37Z",
"severity": "MODERATE",
"cwe_ids": [
"CWE-532"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-16T20:42:55Z"
}