{"id":"CVE-2026-105112","state":"PUBLISHED","title":"Nezha 1.8.0 before 2.3.13 Deadlock DoS via notification-group endpoints","description":"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.","publishedAt":"2026-10-03T12:14:38.663Z","updatedAt":"2026-10-05T15:57:12.205Z","severity":{"score":6,"label":"Medium","version":"4.0","vector":"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","source":"VulnCheck"},"assigner":"VulnCheck","products":["nezhahq nezha"],"affected":[{"vendor":"nezhahq","product":"nezha","packageURL":"pkg:golang/github.com/nezhahq/nezha","defaultStatus":"unaffected","versions":[{"version":"1.8.0","status":"affected","lessThan":"2.3.13","versionType":"semver"},{"version":"2.3.13","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/nezhahq/nezha/security/advisories/GHSA-53vr-p24v-qvwf","https://www.vulncheck.com/advisories/nezha-1.8.0-before-2.3.13-deadlock-dos-via-notification-group-endpoints"],"weaknesses":["CWE-362"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/105xxx/CVE-2026-105112.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-105112","state":"PUBLISHED","datePublished":"2026-10-03T12:14:38.663Z","dateUpdated":"2026-10-05T15:57:12.205Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-03T12:04:36.963Z"},"containers":{"cna":{"title":"Nezha 1.8.0 before 2.3.13 Deadlock DoS via notification-group endpoints","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"nezhahq","product":"nezha","packageURL":"pkg:golang/github.com/nezhahq/nezha","defaultStatus":"unaffected","versions":[{"version":"1.8.0","status":"affected","lessThan":"2.3.13","versionType":"semver"},{"version":"2.3.13","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/nezhahq/nezha/security/advisories/GHSA-53vr-p24v-qvwf","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-53vr-p24v-qvwf)"},{"url":"https://www.vulncheck.com/advisories/nezha-1.8.0-before-2.3.13-deadlock-dos-via-notification-group-endpoints","name":"VulnCheck Advisory: Nezha 1.8.0 before 2.3.13 Deadlock DoS via notification-group endpoints","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":5.3,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-362","lang":"en","description":"Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-03T12:14:38.663Z"},"datePublic":"2026-09-19T00:00:00.000Z","credits":[{"lang":"en","value":"sondt99","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/nezhahq/nezha/security/advisories/GHSA-53vr-p24v-qvwf","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-05T15:56:45.675521Z","id":"CVE-2026-105112","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":"2026-10-05T15:57:12.205Z"}}]}}}