golang-github-labstack-echo — security advisory

{
  "id": "4e59ef4af43a490f676503da5aad3265c41ddb4f92da536ae83c19dfed5cae2d",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-55677",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-55677",
    "summary": "Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, Echo's router and static file handler disagree on URL path decoding. The router matches routes using the raw encoded path (preserving %2F as-is), while StaticDirectoryHandler unescapes %2F to / before resolving filesystem paths. This allows an attacker to bypass route-level access controls and read static files without authorization. This vulnerability is fixed in 4.15.3 and 5.2.0.",
    "evidence": "osv:DEBIAN-CVE-2026-55677",
    "products": [
      {
        "name": {
          "value": "golang-github-labstack-echo",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "4.11.1-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.11.1-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.12.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "4.2.1-3",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "golang-github-labstack-echo",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "4.12.0-1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "golang-github-labstack-echo",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "4.12.0-1",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2026-55677",
      "aliases": [
        "DEBIAN-CVE-2026-55677"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "golang-github-labstack-echo",
            "purl": "pkg:deb/debian/golang-github-labstack-echo?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "4.11.1-1",
            "4.11.1-2",
            "4.12.0-1",
            "4.2.1-3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55677.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "golang-github-labstack-echo",
            "purl": "pkg:deb/debian/golang-github-labstack-echo?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "4.12.0-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55677.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "golang-github-labstack-echo",
            "purl": "pkg:deb/debian/golang-github-labstack-echo?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "4.12.0-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55677.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-26T11:47:30.719750684Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-55677"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-55677"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-55677",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 450772,
  "published_at": "2026-06-26T17:16:34.203+00:00"
}