Unauthenticated GraphQL queries for user accounts can expose password hashes of users that have created or modified content, typically but not necessarily limited to administrators and editors.
Affected versions: Ibexa DXP v3.3.*, v4.2.*, eZ Platform v2.5.* Resolving versions: Ibexa DXP v3.3.28, v4.2.3, eZ Platform v2.5.31
Remove the "passwordHash" entry from "src/bundle/Resources/config/graphql/User.types.yaml" in the GraphQL package, and other properties like hash type, email, login if you prefer.
This issue was reported to us by Philippe Tranca ("trancap") of the company Lexfo. We are very grateful for their research, and responsible disclosure to us of this critical vulnerability.
If you have any questions or comments about this advisory, please contact Support via your service portal.
| Software | From | Fixed in |
|---|---|---|
ibexa / graphql
|
2.5.0 | 2.5.31 |
ibexa / graphql
|
4.2.0 | 4.2.3 |
ibexa / graphql
|
3.3.0 | 3.3.28 |
A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.
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Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.
Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.
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