{"id":"CVE-2026-52852","state":"PUBLISHED","title":"Traccar: Uncontrolled Infinite Loop DoS via Group Parent Cycle","description":"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.","publishedAt":"2026-09-17T18:32:07.436Z","updatedAt":"2026-09-21T21:07:12.626Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["traccar traccar"],"affected":[{"vendor":"traccar","product":"traccar","versions":[{"version":"< 6.14.0","status":"affected"}]}],"references":["https://github.com/traccar/traccar/security/advisories/GHSA-6qh3-234v-r254","https://github.com/traccar/traccar/commit/8f6f59ac29d8b1222254e938672a0d99098fd800","https://github.com/traccar/traccar/releases/tag/v6.14.0"],"weaknesses":["CWE-674"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/52xxx/CVE-2026-52852.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-52852","state":"PUBLISHED","datePublished":"2026-09-17T18:32:07.436Z","dateUpdated":"2026-09-21T21:07:12.626Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-08T18:41:27.724Z"},"containers":{"cna":{"title":"Traccar: Uncontrolled Infinite Loop DoS via Group Parent Cycle","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"traccar","product":"traccar","versions":[{"version":"< 6.14.0","status":"affected"}]}],"references":[{"url":"https://github.com/traccar/traccar/security/advisories/GHSA-6qh3-234v-r254","name":"https://github.com/traccar/traccar/security/advisories/GHSA-6qh3-234v-r254","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/traccar/traccar/commit/8f6f59ac29d8b1222254e938672a0d99098fd800","name":"https://github.com/traccar/traccar/commit/8f6f59ac29d8b1222254e938672a0d99098fd800","tags":["x_refsource_MISC"]},{"url":"https://github.com/traccar/traccar/releases/tag/v6.14.0","name":"https://github.com/traccar/traccar/releases/tag/v6.14.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-674","lang":"en","description":"CWE-674: Uncontrolled Recursion","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-17T18:32:07.436Z"},"source":{"advisory":"GHSA-6qh3-234v-r254","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/traccar/traccar/security/advisories/GHSA-6qh3-234v-r254","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-21T21:06:43.641548Z","id":"CVE-2026-52852","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-21T21:07:12.626Z"}}]}}}