CVE-2026-34164

MEDIUMNVD 4.94.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.9 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 70% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
4.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 4.9Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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 v3
4.9
EG Score
4.9MEDIUMmedium confidence
EG Risk
22
EG Risk 22/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity49% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.5%
EPSS %ILE
39th
KEV
Not listed

Published

April 16, 2026

Last Modified

April 29, 2026

Advisory Details (4)

Auto-updated Aug 3, 2026
Patch available. Sources: github_commit, github_pr, github.
githubMentions a patch (unverified)

Sensitive data exposure through inbox message logging in InboxHandlingService · Advisory · valtimo-platform/valtimo · GitHub

https://github.com/valtimo-platform/valtimo/security/advisories/GHSA-hfrg-mcvw-8mch
github_pr Patch Available

GH-653: Fix sensitive data logging, etc

Patch available: valtimo-platform/valtimo 13.35.0 (PR #497 merged 2026-03-26)

https://github.com/valtimo-platform/valtimo/pull/497
github_commit Patch Available

commit f16a1940ba7b (valtimo-platform/valtimo)

Patch available: valtimo-platform/valtimo 13.35.0 (contains commit f16a1940ba7b)

https://github.com/valtimo-platform/valtimo/commit/f16a1940ba7b34627c0b966f98ca78655ace9335
generic

Inbox & SSE event mapper: sensitive data logging, silent exceptions, and null safety issues · Issue #653 · generiekzaakafhandelcomponent/gzac-issues · GitHub

https://github.com/generiekzaakafhandelcomponent/gzac-issues/issues/653

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
com.ritense.valtimo:inbox13.0.0.RELEASE ... 13.9.1.RELEASE (33 versions)
  • 13.0.0.RELEASE up to 13.22.0.RELEASE: fixed in 13.22.0.RELEASE
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 27× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 179 total refreshes for this CVE.

  1. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-10 19:33 UTCOSV refresh
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Frequently asked(5)

What is CVE-2026-34164?
CVE-2026-34164 is a medium vulnerability published on April 16, 2026. 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…
When was CVE-2026-34164 disclosed?
CVE-2026-34164 was first published on April 16, 2026, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34164 actively exploited?
CVE-2026-34164 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (39th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-34164?
CVE-2026-34164 has a CVSS v3 base score of 4.9 (NVD).
How do I remediate CVE-2026-34164?
A fix for CVE-2026-34164 is available: update to the fixed version the vendor names in its advisory.

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