{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.38.0"
              },
              {
                "fixed": "2.38.2"
              },
              {
                "introduced": "2.0.0"
              },
              {
                "fixed": "2.37.7"
              },
              {
                "introduced": "0"
              },
              {
                "fixed": "1.123.76"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "ee7aca5845c9db2188150591eceebe20c1314643"
            },
            {
              "fixed": "7bd63f41c2f1f2bc2576c0728dbe2e68ed61e0f1"
            },
            {
              "introduced": "a8ecda44f7627630bc8b78cf671405157ad41c4f"
            },
            {
              "fixed": "2a4ca7868dc75edca4c575d6507021e1e6b0ec90"
            },
            {
              "introduced": "0"
            },
            {
              "fixed": "cbee391326797c19a2593934063311fed6131e07"
            }
          ],
          "repo": "https://github.com/n8n-io/n8n",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-j535-v25q-vx3q"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-1333"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86081.json"
  },
  "details": "n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the Git node clone operation matched an attacker-controlled destination path against the default N8N_BLOCK_FILE_PATTERNS regular expression. The pattern ^(./).git(/.)$ allowed catastrophic backtracking and ran synchronously in the main n8n process. An authenticated workflow editor could therefore freeze the instance with one workflow execution; the affected default is declared in packages/@n8n/config/src/configs/security.config.ts. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.",
  "id": "CVE-2026-86081",
  "modified": "2026-09-11T03:30:44.724240560Z",
  "published": "2026-09-08T21:24:20.936Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.76"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86081.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-j535-v25q-vx3q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86081"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "n8n: Regular Expression Denial of Service in the Default Blocked-File-Pattern Match via a Git Node Clone Path"
}