{"id":"CVE-2025-62723","aliases":["EUVD-2025-35890","GHSA-7mhp-22q4-r6vv"],"status":"published","title":"FlashMQ does not release memory of queued QoS messages","description":"FlashMQ is a MQTT broker/server, designed for multi-CPU environments. Prior to version 1.23.2, any authenticated user can create sessions and have them collect QoS messages. When not sent to a client, these are then not released upon (eventual) session expiration. Version 1.23.2 fixes the issue.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00341,"percentile":0.27892,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-772"],"published":"2025-10-24T20:16:34Z","modified":"2026-10-28T10:45:45Z","products":[{"vendor":"flashmq","product":"flashmq"},{"vendor":"halfgaar","product":"flashmq"}],"references":[{"url":"https://github.com/halfgaar/FlashMQ/security/advisories/GHSA-7mhp-22q4-r6vv","tags":["x_refsource_CONFIRM","Patch","Vendor Advisory","advisory"]},{"url":"https://github.com/halfgaar/FlashMQ/issues/154","tags":["x_refsource_MISC","Issue Tracking","report"]},{"url":"https://github.com/halfgaar/FlashMQ/commit/e86c49360ef4387440c97f591770cdb9284b4ee9","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62723.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-62723","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-62723","title":"FlashMQ does not release memory of queued QoS messages","description":"FlashMQ is a MQTT broker/server, designed for multi-CPU environments. Prior to version 1.23.2, any authenticated user can create sessions and have them collect QoS messages. When not sent to a client, these are then not released upon (eventual) session expiration. Version 1.23.2 fixes the issue.","status":"published","published":"2025-10-24T20:16:34.047Z","modified":"2025-10-24T20:32:00.596Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-772"],"updated_at":"2026-11-02T14:32:54.87586Z"}],"euvd":[{"id":"EUVD-2025-35890","description":"FlashMQ is a MQTT broker/server, designed for multi-CPU environments. Prior to version 1.23.2, any authenticated user can create sessions and have them collect QoS messages. When not sent to a client, these are then not released upon (eventual) session expiration. Version 1.23.2 fixes the issue.","status":"published","published":"2025-10-24T20:16:34Z","modified":"2025-10-24T20:32:00Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T19:49:37.392201Z"}],"nvd":[{"id":"CVE-2025-62723","description":"FlashMQ is a MQTT broker/server, designed for multi-CPU environments. Prior to version 1.23.2, any authenticated user can create sessions and have them collect QoS messages. When not sent to a client, these are then not released upon (eventual) session expiration. Version 1.23.2 fixes the issue.","status":"published","published":"2025-10-24T21:16:14.01Z","modified":"2026-10-08T11:10:00.25Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-772"],"updated_at":"2026-11-02T14:11:39.579859Z"}],"osv":[{"id":"CVE-2025-62723","title":"FlashMQ does not release memory of queued QoS messages","description":"FlashMQ is a MQTT broker/server, designed for multi-CPU environments. Prior to version 1.23.2, any authenticated user can create sessions and have them collect QoS messages. When not sent to a client, these are then not released upon (eventual) session expiration. Version 1.23.2 fixes the issue.","status":"published","published":"2025-10-24T20:16:34.047Z","modified":"2026-10-28T10:45:45.617981497Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-772"],"updated_at":"2026-11-02T15:44:51.851511Z"}]}}