{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-118265",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-27T20:13:55.314Z",
        "datePublished": "2026-10-28T19:03:56.934Z",
        "dateUpdated": "2026-10-28T19:03:56.934Z"
    },
    "containers": {
        "cna": {
            "title": "Echo: X-Real-IP extractor trusts the header value instead of the sending peer",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-348",
                            "lang": "en",
                            "description": "CWE-348: Use of Less Trusted Source",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 5.3,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/labstack/echo/security/advisories/GHSA-h53f-rm2w-w7rg",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/labstack/echo/security/advisories/GHSA-h53f-rm2w-w7rg"
                },
                {
                    "name": "https://github.com/labstack/echo/commit/1855061e572ae9dab727c811d8382f266bfbaae",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/labstack/echo/commit/1855061e572ae9dab727c811d8382f266bfbaae"
                },
                {
                    "name": "https://github.com/labstack/echo/releases/tag/v5.4.1",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/labstack/echo/releases/tag/v5.4.1"
                }
            ],
            "affected": [
                {
                    "vendor": "labstack",
                    "product": "echo",
                    "versions": [
                        {
                            "version": ">= 5.0.0, < 5.4.1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-28T19:03:56.934Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Echo is a Go web framework. From 5.0.0 until 5.4.1, Echo v5's ExtractIPFromRealIPHeader validates whether the client-supplied X-Real-IP value belongs to a trusted range instead of validating the direct network peer. A client reaching Echo directly, or through a proxy that preserves the header, can supply a loopback or private address and have Context.RealIP return that spoofed identity. Applications using the extractor for IP allowlists, rate limiting, audit logs, or forwarding headers can consequently trust an attacker-controlled address; the default direct extractor and Echo v4 are unaffected. This issue is fixed in 5.4.1."
                }
            ],
            "source": {
                "advisory": "GHSA-h53f-rm2w-w7rg",
                "discovery": "UNKNOWN"
            }
        }
    }
}