{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-118653", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-28T17:25:37.561Z", "datePublished": "2026-10-28T19:42:05.556Z", "dateUpdated": "2026-10-28T19:42:05.556Z"}, "containers": {"cna": {"title": "Echo: Rate Limiter Bypass via Spoofed X-Forwarded-For Header in Default Configuration", "problemTypes": [{"descriptions": [{"cweId": "CWE-290", "lang": "en", "description": "CWE-290: Authentication Bypass by Spoofing", "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-246p-cpwv-v3jq", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/labstack/echo/security/advisories/GHSA-246p-cpwv-v3jq"}, {"name": "https://github.com/labstack/echo/commit/22e4b71109ef072ef011a489066ec662ca9565b2", "tags": ["x_refsource_MISC"], "url": "https://github.com/labstack/echo/commit/22e4b71109ef072ef011a489066ec662ca9565b2"}, {"name": "https://github.com/labstack/echo/releases/tag/v5.1.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/labstack/echo/releases/tag/v5.1.0"}], "affected": [{"vendor": "labstack", "product": "echo", "versions": [{"version": ">= 4.0.0, < 5.1.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-28T19:42:05.556Z"}, "descriptions": [{"lang": "en", "value": "Echo is a Go web framework. From 4.0.0 until 5.1.0, Context.RealIP falls back to client-supplied X-Forwarded-For or X-Real-IP values when Echo.IPExtractor is unset, and the default RateLimiter uses that result as its client identifier. A remote attacker can rotate arbitrary forwarded-address values to obtain new rate-limit buckets and bypass IP-based throttling used for controls such as brute-force or request-volume protection. This issue is fixed in Echo v5.1.0."}], "source": {"advisory": "GHSA-246p-cpwv-v3jq", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "echo", "vendor": "labstack", "versions": [{"status": "affected", "version": ">= 4.0.0, < 5.1.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Echo is a Go web framework. From 4.0.0 until 5.1.0, Context.RealIP falls back to client-supplied X-Forwarded-For or X-Real-IP values when Echo.IPExtractor is unset, and the default RateLimiter uses that result as its client identifier. A remote attacker can rotate arbitrary forwarded-address values to obtain new rate-limit buckets and bypass IP-based throttling used for controls such as brute-force or request-volume protection. This issue is fixed in Echo v5.1.0."}], "id": "CVE-2026-118653", "lastModified": "2026-10-28T20:17:22.400", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-28T20:17:22.400", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/labstack/echo/commit/22e4b71109ef072ef011a489066ec662ca9565b2"}, {"source": "security-advisories@github.com", "url": "https://github.com/labstack/echo/releases/tag/v5.1.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/labstack/echo/security/advisories/GHSA-246p-cpwv-v3jq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-290"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.0.0,5.1.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "echo", "source": "cna", "vendor": "labstack"}, "product": "echo", "vendor": "labstack"}], "created": "2026-10-28T21:44:52.275089+00:00", "updated": "2026-10-28T21:44:52.275147+00:00", "vendors": ["labstack", "labstack$PRODUCT$echo"]}