{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-118658", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-28T17:25:37.561Z", "datePublished": "2026-10-28T20:17:11.083Z", "dateUpdated": "2026-10-28T20:17:11.083Z"}, "containers": {"cna": {"title": "Echo: Arbitrary Scheme Injection in WWWRedirect/NonWWWRedirect Middlewares via X-Forwarded-Proto", "problemTypes": [{"descriptions": [{"cweId": "CWE-601", "lang": "en", "description": "CWE-601: URL Redirection to Untrusted Site ('Open Redirect')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/labstack/echo/security/advisories/GHSA-23wf-92cp-8pcj", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/labstack/echo/security/advisories/GHSA-23wf-92cp-8pcj"}, {"name": "https://github.com/labstack/echo/commit/ca4f38a474302aabee93c66bdd0052359882e181", "tags": ["x_refsource_MISC"], "url": "https://github.com/labstack/echo/commit/ca4f38a474302aabee93c66bdd0052359882e181"}, {"name": "https://github.com/labstack/echo/commit/d1d8ad3f99dd9b80542cd0c357d56a8916c515df", "tags": ["x_refsource_MISC"], "url": "https://github.com/labstack/echo/commit/d1d8ad3f99dd9b80542cd0c357d56a8916c515df"}, {"name": "https://github.com/labstack/echo/releases/tag/v4.15.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/labstack/echo/releases/tag/v4.15.2"}, {"name": "https://github.com/labstack/echo/releases/tag/v5.1.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/labstack/echo/releases/tag/v5.1.1"}], "affected": [{"vendor": "labstack", "product": "echo", "versions": [{"version": ">= 5.0.0, < 5.1.1", "status": "affected"}, {"version": "< 4.15.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-28T20:17:11.083Z"}, "descriptions": [{"lang": "en", "value": "Echo is a Go web framework. Prior to 4.15.2 and 5.1.1, Context.Scheme returns values from X-Forwarded-Proto, X-Forwarded-Protocol, or X-Url-Scheme without validating that they are supported web schemes. WWWRedirect and NonWWWRedirect use that value to construct a Location header, so an attacker controlling a forwarded scheme header can cause a redirect to use an arbitrary URI scheme. Exploitation requires an affected redirect middleware and user interaction with the response; the HTTPS-specific redirect variants hardcode HTTPS and are unaffected. This issue is fixed in 4.15.2 and 5.1.1."}], "source": {"advisory": "GHSA-23wf-92cp-8pcj", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "echo", "vendor": "labstack", "versions": [{"status": "affected", "version": ">= 5.0.0, < 5.1.1"}, {"status": "affected", "version": "< 4.15.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Echo is a Go web framework. Prior to 4.15.2 and 5.1.1, Context.Scheme returns values from X-Forwarded-Proto, X-Forwarded-Protocol, or X-Url-Scheme without validating that they are supported web schemes. WWWRedirect and NonWWWRedirect use that value to construct a Location header, so an attacker controlling a forwarded scheme header can cause a redirect to use an arbitrary URI scheme. Exploitation requires an affected redirect middleware and user interaction with the response; the HTTPS-specific redirect variants hardcode HTTPS and are unaffected. This issue is fixed in 4.15.2 and 5.1.1."}], "id": "CVE-2026-118658", "lastModified": "2026-10-29T15:15:16.507", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 2.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-28T21:16:55.827", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/labstack/echo/commit/ca4f38a474302aabee93c66bdd0052359882e181"}, {"source": "security-advisories@github.com", "url": "https://github.com/labstack/echo/commit/d1d8ad3f99dd9b80542cd0c357d56a8916c515df"}, {"source": "security-advisories@github.com", "url": "https://github.com/labstack/echo/releases/tag/v4.15.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/labstack/echo/releases/tag/v5.1.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/labstack/echo/security/advisories/GHSA-23wf-92cp-8pcj"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-601"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.0.0,5.1.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.15.2)"}}], "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": "2026-10-28T22:00:18.015045+00:00", "updated": "2026-10-28T22:45:15.017182+00:00", "vendors": ["labstack", "labstack$PRODUCT$echo"]}