CVE-2026-42160 Overview
CVE-2026-42160 is an insufficient authorization vulnerability in dataspace-portal, the backend of the sovity Data Space Portal. Data Space Portal is an open-source Software as a Service (SaaS) solution for Dataspace management. The flaw affects versions from 2.1.1 up to but not including 7.3.2. The backend fails to properly restrict actions tied to self-registered organization and user accounts that remain in the PENDING state. This allows unauthenticated, network-based abuse against affected deployments. The maintainers addressed the issue in version 7.3.2. The weakness is classified under CWE-602: Client-Side Enforcement of Server-Side Security.
Critical Impact
An unauthenticated attacker can self-register and leverage PENDING accounts to access functionality that should require approval, compromising confidentiality and integrity of the dataspace.
Affected Products
- sovity dataspace-portal version 2.1.1 and later
- sovity dataspace-portal versions prior to 7.3.2
- Deployments exposing the Data Space Portal backend to untrusted networks
Discovery Timeline
- 2026-05-08 - CVE-2026-42160 published to NVD
- 2026-05-13 - Last updated in NVD database
Technical Details for CVE-2026-42160
Vulnerability Analysis
The Data Space Portal supports self-registration of organizations and users. New registrations enter a PENDING state and should require administrator approval before gaining access to protected functionality. The backend does not enforce this state check on all authorization paths. As a result, accounts that have not been approved can perform actions reserved for fully provisioned identities. The attack requires no privileges, no user interaction, and is reachable over the network, enabling abuse against any exposed instance running an affected version.
Root Cause
The vulnerability stems from incomplete server-side authorization checks in the dataspace-portal backend. The application treats authentication context as sufficient without consistently validating the account lifecycle state. Authorization enforcement does not gate sensitive endpoints behind a confirmed, approved account, which aligns with the CWE-602 pattern of relying on assumptions that are not enforced server-side.
Attack Vector
An attacker registers a new organization or user through the public self-registration flow. The account enters the PENDING state. The attacker then issues backend API requests that should be restricted to approved accounts. Because the backend skips the approval-state check on the affected paths, the requests succeed. This grants the attacker unauthorized read and write access to dataspace resources, including data and configuration controlled by other tenants. Refer to the GitHub Security Advisory GHSA-989g-wpfv-6vxx for vendor-supplied details.
No public proof-of-concept is referenced in the advisory. The vulnerability mechanism is described in prose because no verified exploit code is available.
Detection Methods for CVE-2026-42160
Indicators of Compromise
- Self-registration events followed by API calls from the same account while still in PENDING status.
- Backend audit log entries showing successful actions by accounts that were never approved by an administrator.
- Unexpected modifications to organization, connector, or catalog objects originating from recently created accounts.
Detection Strategies
- Correlate user lifecycle events (registration, approval) with subsequent authenticated API requests and flag activity that occurs before approval.
- Monitor reverse proxy and application logs for HTTP 2xx responses on privileged endpoints issued to accounts whose state is PENDING.
- Compare the deployed dataspace-portal version against the fixed release 7.3.2 listed in the GitHub Release v7.3.2 notes.
Monitoring Recommendations
- Enable verbose authorization logging on the dataspace-portal backend and forward logs to a central SIEM.
- Alert on bursts of self-registrations from a single IP or autonomous system.
- Track the count of API calls per account state and alert when PENDING accounts generate non-trivial backend traffic.
How to Mitigate CVE-2026-42160
Immediate Actions Required
- Upgrade dataspace-portal to version 7.3.2 or later without delay.
- Audit existing PENDING accounts and revoke or delete any that were not legitimately created.
- Review backend audit logs for unauthorized actions performed by unapproved accounts since the deployment of any version from 2.1.1 onward.
Patch Information
The vendor fixed the issue in dataspace-portal version 7.3.2. Release artifacts and changelog details are available in the GitHub Release v7.3.2. The corresponding advisory is published as GHSA-989g-wpfv-6vxx. Operators running any version between 2.1.1 and 7.3.1 inclusive must upgrade.
Workarounds
- Disable the public self-registration feature until the upgrade to 7.3.2 is complete.
- Restrict network access to the dataspace-portal backend using a reverse proxy, VPN, or allow-list while the patch is being deployed.
- Manually purge any PENDING accounts on a scheduled basis to limit the exposure window for abuse.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
