{"id":"CVE-2026-105112","summary":"Nezha 1.8.0 before 2.3.13 Deadlock DoS via notification-group endpoints","details":"Nezha from 1.8.0 before 2.3.13 contains a lock-order inversion in UpdateGroup and DeleteGroup that allows authenticated non-admin users to deadlock the alerting subsystem. Attackers can concurrently call the notification-group and batch-delete endpoints with oversized id lists to widen the race and close an ABBA cycle, permanently killing alert delivery until restart.","aliases":["GHSA-53vr-p24v-qvwf"],"modified":"2026-10-06T02:30:49.203963334Z","published":"2026-10-03T12:14:38.663Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-362"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105112.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105112.json"},{"type":"ADVISORY","url":"https://github.com/nezhahq/nezha/security/advisories/GHSA-53vr-p24v-qvwf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105112"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/nezha-1.8.0-before-2.3.13-deadlock-dos-via-notification-group-endpoints"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nezhahq/nezha","events":[{"introduced":"91bef2882a2f8a3948da216d5922e7dae4988f49"},{"fixed":"9dab6a5039b5043d5e5127aa08d9614d59cbbcc2"}],"database_specific":{"extracted_events":[{"introduced":"1.8.0"},{"fixed":"2.3.13"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-105112.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}