{"id":"CVE-2026-115289","title":"Use of Multiple Resources with Duplicate Identifier in APM Server Leading to Information Disclosure","summary":"Use of Multiple Resources with Duplicate Identifier (CWE-694) in APM Server can lead to information disclosure via a specially crafted agent configuration request. An authenticated APM agent could receive the central agent configuration …","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cvssSource":"cna","cwe":["CWE-694"],"vendor":"Elastic","product":"APM Server","affected":["apm_server >= 8.0.0 <= 8.19.23","apm_server >= 9.0.0 <= 9.4.8","apm_server >= 9.5.0 <= 9.5.5"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-03T17:36:32.290044Z"},"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T17:36:41.024Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-115289","references":[{"url":"https://discuss.elastic.co/t/apm-server-8-19-24-9-4-9-9-5-6-security-update-esa-2026-200/391355"}],"tags":["cve.org"],"epss":0.00241,"epssPercentile":0.15398,"ingestedAt":"2026-11-05T20:33:06.325Z","slug":"CVE-2026-115289","body":"## Overview\n\nUse of Multiple Resources with Duplicate Identifier (CWE-694) in APM Server can lead to information disclosure via a specially crafted agent configuration request. An authenticated APM agent could receive the central agent configuration that belongs to a different service until the cached configuration expires. A service could also run with central configuration settings, such as sampling settings, that were meant for a different service.\n\n## Affected\n\n- `apm_server >= 8.0.0 <= 8.19.23`\n- `apm_server >= 9.0.0 <= 9.4.8`\n- `apm_server >= 9.5.0 <= 9.5.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}