{"id":"CVE-2026-105112","title":"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","summary":"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-…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-362"],"vendor":"nezhahq","product":"nezha","affected":["nezha >= 1.8.0 < 2.3.13"],"published":"2026-10-03","updated":"2026-10-05","sourceUpdated":"2026-10-05T16:17:07.417","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-105112","references":[{"url":"https://github.com/nezhahq/nezha/security/advisories/GHSA-53vr-p24v-qvwf","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/nezha-1.8.0-before-2.3.13-deadlock-dos-via-notification-group-endpoints","label":"disclosure@vulncheck.com"},{"url":"https://github.com/nezhahq/nezha/security/advisories/GHSA-53vr-p24v-qvwf","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-05T15:56:45.675521Z"},"epss":0.00218,"epssPercentile":0.12152,"ingestedAt":"2026-10-03T14:47:06.462Z","slug":"CVE-2026-105112","body":"## Overview\n\nNezha 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":215902,"id":"CVE-2026-105112","ts":1791217631197,"field":"exploit_available","old":"false","new":"true"}]}