Is CVE-2026-34164 actively exploited?

No active exploitation of CVE-2026-34164 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34164 be exploited remotely?

Yes. CVE-2026-34164 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34164?

CVE-2026-34164 has a CVSS score of 4.9 (MEDIUM).

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MEDIUM

CVE-2026-34164

CWE-532Published: April 16, 2026· Updated: Apr 17, 2026

4.9

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.2th

Official Description

Valtimo is an open-source business process automation platform. In versions 13.0.0 through 13.21.0, the InboxHandlingService logs the full content of every incoming inbox message at INFO level. Inbox messages can contain highly sensitive information including personal data (PII), citizen identifiers (BSN), and case details. This data is exposed to anyone with access to application logs or any Valtimo user with the admin role through the Admin UI logging module. This issue has been fixed in version 13.22.0. If developers are unable to upgrade immediately, they can restrict access to application logs and adjust the log level for com.ritense.inbox to WARN or higher in their application configuration as a workaround.

NVD Source

Technical Analysis

CVE-2026-34164 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 4.9.