Traccar up to 6.13.x Group Hierarchy AttributeUtil.java org.traccar.helper.model.AttributeUtil.lookup resource consumption

Summaryinfo

A vulnerability was found in Traccar up to 6.13.x. It has been classified as problematic. The impacted element is the function org.traccar.helper.model.AttributeUtil.lookup of the file org/traccar/helper/model/AttributeUtil.java of the component Group Hierarchy. This manipulation causes resource consumption. This vulnerability is handled as CVE-2026-52852. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Traccar up to 6.13.x and classified as problematic. Affected by this vulnerability is the function org.traccar.helper.model.AttributeUtil.lookup of the file org/traccar/helper/model/AttributeUtil.java of the component Group Hierarchy. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-52852 since 06/08/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation needs additional levels of successful authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 6.14.0 eliminates this vulnerability.

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Productinfo

Name

• Traccar

Version

• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6
• 6.7
• 6.8
• 6.9
• 6.10
• 6.11
• 6.12
• 6.13

Website

• Product: https://github.com/traccar/traccar/

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