{"api_version":"1","generated_at":"2026-10-29T08:37:52+00:00","cve":"CVE-2026-118265","urls":{"html":"https://cve.report/CVE-2026-118265","api":"https://cve.report/api/cve/CVE-2026-118265.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-118265","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-118265"},"summary":{"title":"Echo: X-Real-IP extractor trusts the header value instead of the sending peer","description":"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.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-10-28 19:17:31","updated_at":"2026-10-28 19:17:31"},"problem_types":["CWE-348","CWE-348 CWE-348: Use of Less Trusted Source"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"5.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"5.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","data":{"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":[{"url":"https://github.com/labstack/echo/commit/1855061e572ae9dab727c811d8382f266bfbaae","name":"https://github.com/labstack/echo/commit/1855061e572ae9dab727c811d8382f266bfbaae","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/labstack/echo/releases/tag/v5.4.1","name":"https://github.com/labstack/echo/releases/tag/v5.4.1","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/labstack/echo/security/advisories/GHSA-h53f-rm2w-w7rg","name":"https://github.com/labstack/echo/security/advisories/GHSA-h53f-rm2w-w7rg","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-118265","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118265","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"labstack","product":"echo","version":"affected >= 5.0.0, < 5.4.1","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"echo","vendor":"labstack","versions":[{"status":"affected","version":">= 5.0.0, < 5.4.1"}]}],"descriptions":[{"lang":"en","value":"Echo is a Go web framework. 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