{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-105112",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-10-03T12:04:36.963Z",
        "datePublished": "2026-10-03T12:14:38.663Z",
        "dateUpdated": "2026-10-03T12:14:38.663Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
                "shortName": "VulnCheck",
                "dateUpdated": "2026-10-03T12:14:38.663Z"
            },
            "datePublic": "2026-09-19T00:00:00.000Z",
            "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."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')",
                            "cweId": "CWE-362",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "nezhahq",
                    "product": "nezha",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:golang/github.com/nezhahq/nezha",
                    "versions": [
                        {
                            "version": "1.8.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "2.3.13"
                        },
                        {
                            "version": "2.3.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "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"
                    }
                }
            ],
            "references": [
                {
                    "url": "https://github.com/nezhahq/nezha/security/advisories/GHSA-53vr-p24v-qvwf",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "name": "GitHub Security Advisory (GHSA-53vr-p24v-qvwf)"
                },
                {
                    "name": "VulnCheck Advisory: Nezha 1.8.0 before 2.3.13 Deadlock DoS via notification-group endpoints",
                    "tags": [
                        "third-party-advisory"
                    ],
                    "url": "https://www.vulncheck.com/advisories/nezha-1.8.0-before-2.3.13-deadlock-dos-via-notification-group-endpoints"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "sondt99",
                    "type": "reporter"
                }
            ],
            "x_generator": {
                "engine": "vulncheck-endgame"
            }
        }
    }
}