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CVE-2026-34164

Valtimo: Sensitive data exposure through inbox message logging in InboxHandlingService

Published: Apr 16, 2026Updated: Apr 16, 2026 Sources: CVE List NVD
NVD MITRE
4.9CVSS
MEDIUM

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None

Weaknesses

CWE-532

Affected Products

valtimo
valtimo-platform

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Credential Access
View detailed technique mapping

References

https://github.com/valtimo-platform/valtimo/security/advisories/GHSA-hfrg-mcvw-8mch
github.com
https://github.com/generiekzaakafhandelcomponent/gzac-issues/issues/653
github.com
https://github.com/valtimo-platform/valtimo/pull/497
github.com
and 2 more references View all →

Timeline

Published
Apr 16, 2026
Last Updated
Apr 16, 2026

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