{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-62999",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-14T23:10:57.032Z",
        "datePublished": "2026-07-31T19:41:55.494Z",
        "dateUpdated": "2026-07-31T19:59:30.346Z"
    },
    "containers": {
        "cna": {
            "title": "Copier: Percent-encoded dot segments in template URLs can allow trusted-prefix escape (Incomplete fix for trust-prefix bypass)",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-22",
                            "lang": "en",
                            "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-180",
                            "lang": "en",
                            "description": "CWE-180: Incorrect Behavior Order: Validate Before Canonicalize",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/copier-org/copier/security/advisories/GHSA-34mv-rjq9-5mch",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/copier-org/copier/security/advisories/GHSA-34mv-rjq9-5mch"
                },
                {
                    "name": "https://github.com/copier-org/copier/commit/7408f0d6287a7bf452715fd9f25dc54eaba3c295",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/copier-org/copier/commit/7408f0d6287a7bf452715fd9f25dc54eaba3c295"
                },
                {
                    "name": "https://github.com/copier-org/copier/releases/tag/v9.17.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/copier-org/copier/releases/tag/v9.17.0"
                }
            ],
            "affected": [
                {
                    "vendor": "copier-org",
                    "product": "copier",
                    "versions": [
                        {
                            "version": ">= 9.5.0, <= 9.16.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-07-31T19:41:55.494Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "source": {
                "advisory": "GHSA-34mv-rjq9-5mch",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/copier-org/copier/security/advisories/GHSA-34mv-rjq9-5mch",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-31T19:59:06.929791Z",
                                "id": "CVE-2026-62999",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-07-31T19:59:30.346Z"
                }
            }
        ]
    }
}