CVE-2026-34164 json
Valtimo: Sensitive data exposure through inbox message logging in InboxHandlingService
published 2026-04-16 6 mo ago modified 2026-09-10 1 mo ago also GHSA-hfrg-mcvw-8mch , EUVD-2026-23296
- cvss
- 4.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- maven com.ritense.valtimo:inbox 13.22.0.RELEASE
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | com.ritense.valtimo:inbox | >=13.0.0.RELEASE, <13.22.0.RELEASE |
13.22.0.RELEASE |
Affected products
- valtimo-platform valtimo
Classification
- Weakness
-
- CWE-532 Insertion of Sensitive Information into Log File
References
-
github.com
/valtimo-platform/valtimo/pull/497
web
-
github.com
/valtimo-platform/valtimo/commit/f16a1940ba7b34627c0b966f98ca78655ace9335
web
-
github.com
/valtimo-platform/valtimo/security/advisories/GHSA-hfrg-mcvw-8mch
web
-
github.com
/generiekzaakafhandelcomponent/gzac-issues/issues/653
web
-
github.com
/valtimo-platform/valtimo/releases/tag/13.22.0
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-34164
advisory
-
github.com
/valtimo-platform/valtimo
package
Sources
- CVE List CVE-2026-34164
- GitHub Advisory GHSA-hfrg-mcvw-8mch
- NVD CVE-2026-34164
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