CVE-2026-118656

{"id": "CVE-2026-118656", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-118656", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-29T15:29:15.771728Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "labstack", "product": "echo", "versions": [{"status": "affected", "version": ">= 5.0.0, < 5.4.0"}, {"status": "affected", "version": "< 4.16.0"}]}]}], "published": "2026-10-28T21:16:55.550", "references": [{"url": "https://github.com/labstack/echo/commit/b838391e2eade87ae7e5a09d7bb5087bec271ec1", "source": "security-advisories@github.com"}, {"url": "https://github.com/labstack/echo/commit/fc410094b2f3415cf2bf5204082137b205bfd5af", "source": "security-advisories@github.com"}, {"url": "https://github.com/labstack/echo/releases/tag/v4.16.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/labstack/echo/releases/tag/v5.4.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/labstack/echo/security/advisories/GHSA-v753-g4cw-jm48", "source": "security-advisories@github.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-601"}]}], "descriptions": [{"lang": "en", "value": "Echo is a Go web framework. Prior to 4.16.0 and 5.4.0, sanitizeURI checks only the first two bytes of a redirect target before deciding whether it begins with an absolute-path separator pair. When AddTrailingSlash or RemoveTrailingSlash is configured with a redirect status, a slash, TAB, separator path form can evade the guard, be emitted in the Location header, and be normalized by a browser into an attacker-controlled host. This issue is fixed in 4.16.0 and 5.4.0."}], "lastModified": "2026-10-29T18:17:27.827", "sourceIdentifier": "security-advisories@github.com"}