{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "9.5.0"
              },
              {
                "fixed": "9.16.0"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "d735c8beac8307c06d9c881714328b76711a4b4d"
            },
            {
              "fixed": "fa9ce15ad39e1eb3085eeed4adb7b16a25e643e6"
            },
            {
              "fixed": "7408f0d6287a7bf452715fd9f25dc54eaba3c295"
            },
            {
              "fixed": "02e1574b125bd6201b55c01aab23146489c89663"
            }
          ],
          "repo": "https://github.com/copier-org/copier",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-34mv-rjq9-5mch"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-180",
      "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62999.json"
  },
  "details": "Copier is a library and CLI app for rendering project templates. From 9.5.0 through 9.16.0, percent-encoded parent-directory segments or encoded path separators in a template URL can match a configured trusted repository prefix before an HTTP server or Git transport decodes the path, allowing unsafe template features from a repository outside the trusted prefix to run after user interaction. This issue is fixed in version 9.17.0.",
  "id": "CVE-2026-62999",
  "modified": "2026-08-02T03:31:55.823666331Z",
  "published": "2026-07-31T19:41:55.494Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/copier-org/copier/releases/tag/v9.17.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62999.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/copier-org/copier/security/advisories/GHSA-34mv-rjq9-5mch"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-62999"
    },
    {
      "type": "FIX",
      "url": "https://github.com/copier-org/copier/commit/7408f0d6287a7bf452715fd9f25dc54eaba3c295"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Copier: Percent-encoded dot segments in template URLs can allow trusted-prefix escape (Incomplete fix for trust-prefix bypass)"
}