GHSA-hfrg-mcvw-8mch — medium GitHub Advisory (CVE-2026-34164) in maven/com.ritense.valtimo:inbox

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

Basic information

Type: reviewed
Severity: medium
Advisory on GitHub: Open advisory ↗
Repository advisory: Open repository advisory ↗
Source code: Browse source ↗
Published (advisory): 2026-04-16 20:42:55 UTC
Updated: 2026-04-24 20:36:50 UTC
GitHub reviewed: 2026-04-16 20:42:55 UTC
NVD published: 2026-04-16

Score	Percentile
0.04%	11.65%

CVSS Scores

Base score	Version	Severity	Vector
4.9	3.1	—	`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:H) They need powerful rights—admin, root, or similar—before this pays off. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:N) Service keeps running; no real outage angle.

Identifiers

Type	Value
GHSA	GHSA-hfrg-mcvw-8mch ↗
CVE	CVE-2026-34164 ↗

CWEs

CWE id	Name
CWE-532	Insertion of Sensitive Information into Log File

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem	Package	Vulnerable range	First patched	Vulnerable functions
maven	com.ritense.valtimo:inbox	>= 13.0.0.RELEASE, < 13.22.0.RELEASE	13.22.0.RELEASE	—

Valtimo: Sensitive data exposure through inbox message logging in InboxHandlingService