{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-118655",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-28T17:25:37.561Z",
        "datePublished": "2026-10-28T20:03:56.897Z",
        "dateUpdated": "2026-10-29T18:29:50.622Z"
    },
    "containers": {
        "cna": {
            "title": "Echo: Static Middleware Double-Unescape Path Traversal",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-174",
                            "lang": "en",
                            "description": "CWE-174: Double Decoding of the Same Data",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 5.9,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/labstack/echo/security/advisories/GHSA-xwq5-6cqp-vx96",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/labstack/echo/security/advisories/GHSA-xwq5-6cqp-vx96"
                },
                {
                    "name": "https://github.com/labstack/echo/issues/2599",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/labstack/echo/issues/2599"
                },
                {
                    "name": "https://github.com/labstack/echo/pull/3006",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/labstack/echo/pull/3006"
                },
                {
                    "name": "https://github.com/labstack/echo/commit/a9ede66a5a7196411131beb1ee801e75bbaf7ac6",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/labstack/echo/commit/a9ede66a5a7196411131beb1ee801e75bbaf7ac6"
                },
                {
                    "name": "https://github.com/labstack/echo/commit/c3fa2a27ff92b2b8db360de614f999ef1da24725",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/labstack/echo/commit/c3fa2a27ff92b2b8db360de614f999ef1da24725"
                },
                {
                    "name": "https://github.com/labstack/echo/releases/tag/v4.15.3",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/labstack/echo/releases/tag/v4.15.3"
                },
                {
                    "name": "https://github.com/labstack/echo/releases/tag/v5.2.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/labstack/echo/releases/tag/v5.2.0"
                }
            ],
            "affected": [
                {
                    "vendor": "labstack",
                    "product": "echo",
                    "versions": [
                        {
                            "version": ">= 5.0.0, < 5.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "< 4.15.3",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-28T20:03:56.897Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, middleware.Static can decode an already decoded Request.URL.Path a second time. Double-encoded separators can consequently be reconstructed before filesystem resolution. This can reach a file under a guarded route when the static middleware is registered globally. This issue is fixed in 4.15.3 and 5.2.0."
                }
            ],
            "source": {
                "advisory": "GHSA-xwq5-6cqp-vx96",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-29T18:29:35.386733Z",
                                "id": "CVE-2026-118655",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-29T18:29:50.622Z"
                }
            }
        ]
    }
}