Medium 4.9Published Apr 16, 2026

CVE-2026-34164Valtimo: Sensitive data exposure through inbox message logging in InboxHandlingService

Updated under an hour ago (Oct 27, 2026, 10:23 PM ET)

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Exploited in the last 30 days

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.

CVSS: 4.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-532
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Apr 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

valtimo-platform valtimo valtimo_platform:valtimo (from the name)	from 13.0.0.RELEASE, < 13.22.0.RELEASE	CNA record

References

References

https://github.com/valtimo-platform/valtimo/security/advisories/GHSA-hfrg-mcvw-8mch	x-refsource-confirm
https://github.com/generiekzaakafhandelcomponent/gzac-issues/issues/653	x-refsource-misc
https://github.com/valtimo-platform/valtimo/pull/497	x-refsource-misc
https://github.com/valtimo-platform/valtimo/commit/f16a1940ba7b34627c0b966f98ca78655ace9335	x-refsource-misc
https://github.com/valtimo-platform/valtimo/releases/tag/13.22.0	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.