Nezha 1.8.0 before 2.3.13 Denial of Service via Notification Mutex Deadlock

{
  "id": "6dba8304eab05ac2d10289bb03dd42d53d9ce8558c193e2782b29fa2d9c9146a",
  "url": "https://osv.dev/vulnerability/CVE-2026-105113",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Nezha 1.8.0 before 2.3.13 Denial of Service via Notification Mutex Deadlock",
    "summary": "Nezha Dashboard from 1.8.0 before 2.3.13 contains an improper locking vulnerability where a non-deferred mutex unlock leaks on a nil-map panic path. Any authenticated non-admin member can issue four notification API calls to permanently deadlock the alerting subsystem, then exhaust memory with blocking requests.",
    "evidence": "osv:CVE-2026-105113",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-105113",
      "aliases": [
        "CVE-2026-105113",
        "GHSA-7j7v-j77m-6g3m"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nezhahq/nezha",
              "type": "GIT",
              "events": [
                {
                  "introduced": "91bef2882a2f8a3948da216d5922e7dae4988f49"
                },
                {
                  "fixed": "9dab6a5039b5043d5e5127aa08d9614d59cbbcc2"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.8.0"
                      },
                      {
                        "fixed": "2.3.13"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "1.8.0"
                      },
                      {
                        "fixed": "2.3.13"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-105113.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.140831035Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105113.json",
        "https://github.com/nezhahq/nezha/security/advisories/GHSA-7j7v-j77m-6g3m",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-105113",
        "https://www.vulncheck.com/advisories/nezha-1.8.0-before-2.3.13-denial-of-service-via-notification-mutex-deadlock"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-667"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105113.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-105113",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 492899,
  "published_at": "2026-10-03T12:14:39.317+00:00"
}