Traccar: Uncontrolled Infinite Loop DoS via Group Parent Cycle
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-674.
Summary
Traccar is an open source GPS tracking system. Prior to 6.14.0, an authenticated user with permission to manage groups and request reports can create a cyclic group-parent hierarchy and request a trips or stops report for a device in that hierarchy. org.traccar.api.resource.GroupResource permits the parent cycle, while org.traccar.helper.model.AttributeUtil.lookup follows group parents without cycle detection, a visited set, or a depth limit. The storage-backed lookup reached through TripsConfig. and ReportUtils.slowTripsAndStops never terminates, pins a Jetty worker at high CPU after the client disconnects, and can exhaust the web/API worker pool when requests are repeated. The position-ingestion cache-backed path is not part of the confirmed affected scope. This issue is fixed in 6.14.0.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA traccar (traccar) Fixed in 6.14.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-52852
References
More traccar vulnerabilities
- TI-2025-38099 Traccar Unauthenticated Local File Inclusion on Windows - Leakage of Traccar Config File CVSS 4.0HIGH 8.7
- TI-2024-20591 Traccar's unrestricted file upload vulnerability in device image upload could lead to remote code execution CVSS 3.1CRITICAL 9.7
- TI-2026-20749 Traccar Vulnerable to Authorization Code Theft via Open Redirect in OIDC Provider Endpoints CVSS 3.1HIGH 8.7
- TI-2026-20748 Traccar Vulnerable to Stored Cross-Site Scripting (XSS) via Malicious SVG File Upload CVSS 3.1HIGH 8.7
- TI-2024-16326 Traccar vulnerable to Path Traversal: 'dir/../../filename' and Unrestricted Upload of File with Dangerous Type CVSS 3.1HIGH 8.5
- TI-2026-70716 Weak password recovery in Traccar lets reset tokens act as sessions CVSS 4.0HIGH 7.6
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences