CVE-2026-118266

{"id": "CVE-2026-118266", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.6}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "labstack", "product": "echo", "versions": [{"status": "affected", "version": "< 4.16.0"}, {"status": "affected", "version": ">= 5.0.0, < 5.4.0"}]}]}], "published": "2026-10-28T20:17:21.577", "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-r7w9-592q-9vg4", "source": "security-advisories@github.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-352"}]}], "descriptions": [{"lang": "en", "value": "Echo is a Go web framework. Prior to 4.16.0 and 5.4.0, Echo's MethodOverride middleware accepts a safe HTTP method as the override target for a POST request. When MethodOverride is registered before CSRF in the post-routing middleware chain, route selection retains the original state-changing POST handler but the override changes the method before CSRF evaluates it, causing both token validation and Sec-Fetch-Site checks to be skipped. A cross-site exploit requires an authenticated victim and an override value that a browser-submitted request can control, such as the form getter used by the advisory reproducer; the default X-HTTP-Method-Override header getter is not settable by a cross-site form. This issue is fixed in 4.16.0 and 5.4.0."}], "lastModified": "2026-10-29T15:15:16.507", "sourceIdentifier": "security-advisories@github.com"}