{"id":"CVE-2026-34164","aliases":["GHSA-hfrg-mcvw-8mch"],"url":"https://o3.security/vulnerability/CVE-2026-34164","summary":"Valtimo: Sensitive data exposure through inbox message logging in InboxHandlingService","details":"### Summary\n\nThe `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.\n\n### Impact\n\nThis data is exposed to:\n- Anyone with access to application logs (stdout/log files)\n- Any Valtimo user with the admin role, through the logging module in the Admin UI\n\n### Affected Code\n\n`com.ritense.inbox.InboxHandlingService#handle` in the `inbox` module.\n\n### Resolution\n\nFixed in [13.22.0](https://github.com/valtimo-platform/valtimo/releases/tag/13.22.0) via commit [`f16a1940ba`](https://github.com/valtimo-platform/valtimo/commit/f16a1940ba7b34627c0b966f98ca78655ace9335) (PR [#497](https://github.com/valtimo-platform/valtimo/pull/497), tracking issue [gzac-issues#653](https://github.com/generiekzaakafhandelcomponent/gzac-issues/issues/653)). The log statement was downgraded from INFO to DEBUG and the message payload was removed from the log output.\n\n### Mitigation\n\nFor versions before 13.22.0, consider:\n- Restricting access to application logs\n- Adjusting the log level for `com.ritense.inbox` to WARN or higher in your application configuration","published":"2026-04-16T21:17:35.472Z","modified":"2026-08-12T03:51:48.190322949Z","cvss":{"score":4.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N"},"epss":{"score":0.00366,"percentile":0.29373,"asOf":"2026-08-08"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"com.ritense.valtimo:inbox","fixedVersion":"13.22.0.RELEASE"}],"fix":{"url":"https://github.com/valtimo-platform/valtimo/commit/f16a1940ba7b34627c0b966f98ca78655ace9335","label":"valtimo-platform/valtimo@f16a194"},"references":[{"type":"WEB","url":"https://github.com/valtimo-platform/valtimo/releases/tag/13.22.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34164.json"},{"type":"ADVISORY","url":"https://github.com/valtimo-platform/valtimo/security/advisories/GHSA-hfrg-mcvw-8mch"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34164"},{"type":"REPORT","url":"https://github.com/generiekzaakafhandelcomponent/gzac-issues/issues/653"},{"type":"FIX","url":"https://github.com/valtimo-platform/valtimo/commit/f16a1940ba7b34627c0b966f98ca78655ace9335"},{"type":"FIX","url":"https://github.com/valtimo-platform/valtimo/pull/497"},{"type":"PACKAGE","url":"https://github.com/valtimo-platform/valtimo"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:48.190322949Z"}}