{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "echo",
          "vendor": "labstack",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 5.0.0, \u003c 5.2.0"
            },
            {
              "status": "affected",
              "version": "\u003c 4.15.3"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-174",
              "description": "CWE-174: Double Decoding of the Same Data",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T20:03:56.897Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "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"
        }
      ],
      "source": {
        "advisory": "GHSA-xwq5-6cqp-vx96",
        "discovery": "UNKNOWN"
      },
      "title": "Echo: Static Middleware Double-Unescape Path Traversal"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-118655",
    "datePublished": "2026-10-28T20:03:56.897Z",
    "dateReserved": "2026-10-28T17:25:37.561Z",
    "dateUpdated": "2026-10-28T20:03:56.897Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}