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MEDIUM severity

GHSA-hfrg-mcvw-8mch inbox

MEDIUMFix: valtimo-platform/valtimo#497

GHSA-hfrg-mcvw-8mch is a medium-severity (CVSS 4.9) CWE-532 vulnerability in com.ritense.valtimo:inbox. A fix is available for com.ritense.valtimo:inbox — see the affected versions and patch details below.

Valtimo: Sensitive data exposure through inbox message logging in InboxHandlingService

Also known asCVE-2026-34164
Published
Apr 16, 2026
Updated
Sep 10, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Sep 22, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-hfrg-mcvw-8mch.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs30th percentile — riskier than 30% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

How urgent is this, really

GHSA-hfrg-mcvw-8mch plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.

Where this sits among everything scored

Of 377,636 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.

Real-World Exposure

1 pkg affected
com.ritense.valtimo:inbox

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Summary

The 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.

Impact

This data is exposed to:

  • Anyone with access to application logs (stdout/log files)
  • Any Valtimo user with the admin role, through the logging module in the Admin UI

Affected Code

com.ritense.inbox.InboxHandlingService#handle in the inbox module.

Resolution

Fixed in 13.22.0 via commit f16a1940ba (PR #497, tracking issue gzac-issues#653). The log statement was downgraded from INFO to DEBUG and the message payload was removed from the log output.

Mitigation

For versions before 13.22.0, consider:

  • Restricting access to application logs
  • Adjusting the log level for com.ritense.inbox to WARN or higher in your application configuration

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
Mavencom.ritense.valtimo:inbox13.0.0.RELEASE&&< 13.22.0.RELEASE13.22.0.RELEASEcom.ritense.valtimo:inbox:13.22.0.RELEASE

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.ritense.valtimo:inbox, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update com.ritense.valtimo:inbox to 13.22.0.RELEASE or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-hfrg-mcvw-8mch is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-hfrg-mcvw-8mch can be triaged on real exposure rather than presence alone.

Tailored to GHSA-hfrg-mcvw-8mch. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Summary The `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. ### Impact This data is exposed to: - Anyone with access to application logs (stdout/log files) - Any Valtimo user with the admin role, through the logging module in the Admin UI ### Affected Code `com.ritense.inbox.InboxHandlingService#handle` in the `inbox` m
O3 Security · Impact-Aware SCA

Is GHSA-hfrg-mcvw-8mch in your dependencies?

O3 Security finds GHSA-hfrg-mcvw-8mch across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

GHSA-hfrg-mcvw-8mch: inbox (Medium 4.9) | O3 Security