Nuclei: Arbitrary Command Execution via DAST Code Signature Bypass

{
  "id": "a15f25606cf7d3328e7111bcec6f19c2d25b99ed0fc3129c9050dc2e229efb92",
  "url": "https://osv.dev/vulnerability/CVE-2026-76802",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Nuclei: Arbitrary Command Execution via DAST Code Signature Bypass",
    "summary": "Nuclei is a vulnerability scanner built on a simple YAML-based DSL. From 3.0.0 until 3.10.0, the DAST template loading branch does not apply the unsigned code-template signature check before accepting a template that contains both a fuzzing: block and an unsigned code: block. When an operator enables -dast, an untrusted multiprotocol template can place an unsigned code request into the execution queue and run arbitrary shell commands even without -code or a valid cryptographic signature. The issue affects CLI DAST scans and SDK integrations that enable DAST while accepting attacker-supplied templates. This issue is fixed in version 3.10.0.",
    "evidence": "osv:CVE-2026-76802",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-76802",
      "aliases": [
        "CVE-2026-76802",
        "GHSA-jpf4-98qj-qr67",
        "GO-2026-6570"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/projectdiscovery/nuclei",
              "type": "GIT",
              "events": [
                {
                  "introduced": "990cec0de154bd3955e0c1e19951f90e06f6ea7c"
                },
                {
                  "fixed": "f9cf234c12a333656751e04493dc4b1f4f5f3e88"
                },
                {
                  "fixed": "1c440e755a97471c56fb0276ee8a8c4132974645"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "3.0.0"
                      },
                      {
                        "fixed": "3.10.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "1c440e755a97471c56fb0276ee8a8c4132974645"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "f9cf234c12a333656751e04493dc4b1f4f5f3e88"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v3.10.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.9.0",
            "v3.8.0",
            "v3.7.1",
            "v3.7.0",
            "v3.6.2",
            "v3.6.1",
            "v3.6.0",
            "v3.5.1",
            "v3.5.0",
            "v3.4.10",
            "v3.4.9",
            "v3.4.8",
            "v3.4.7",
            "v3.4.6",
            "v3.4.5",
            "v3.4.4",
            "v3.4.3",
            "v3.4.2",
            "v3.4.1",
            "v3.4.0",
            "v3.3.10",
            "v3.3.9",
            "v3.3.8",
            "v3.3.7",
            "v3.3.6",
            "v3.3.5",
            "v3.3.4",
            "v3.3.3",
            "v3.3.2",
            "v3.3.1",
            "v3.3.0",
            "v3.2.9",
            "v3.2.8",
            "v3.2.7",
            "v3.2.6",
            "v3.2.5",
            "v3.2.4",
            "v3.2.3",
            "v3.2.2",
            "v3.2.1",
            "v3.2.0",
            "v3.1.10",
            "v3.1.9",
            "v3.1.8",
            "v3.1.7",
            "v3.1.6",
            "v3.1.5",
            "v3.1.4",
            "v3.1.3",
            "v3.1.2",
            "v3.1.1",
            "v3.1.0",
            "v3.0.4",
            "v3.0.3",
            "v3.0.2",
            "v3.0.1",
            "v3.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-76802.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.729521635Z",
      "provider": "osv",
      "references": [
        "https://github.com/projectdiscovery/nuclei/releases/tag/v3.10.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/76xxx/CVE-2026-76802.json",
        "https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-jpf4-98qj-qr67",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-76802",
        "https://github.com/projectdiscovery/nuclei/commit/1c440e755a97471c56fb0276ee8a8c4132974645",
        "https://github.com/projectdiscovery/nuclei/pull/7472"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-78"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/76xxx/CVE-2026-76802.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-76802",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 501008,
  "published_at": "2026-09-22T16:47:00.36+00:00"
}