{"answers":{"affected":"4 open source packages ship an affected version, including github.com/labstack/echo/v4 and github.com/labstack/echo/v5.","exploited":"There is no known exploitation of CVE-2026-118657 in the wild and no public exploit code.","fix":"Upgrade github.com/labstack/echo/v4 to 4.16.0 or later.","what":"CVE-2026-118657 is a medium-severity vulnerability in labstack echo, published on 28 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-118657 and fix it if it is affected.\n\nWhat it is: CVE-2026-118657 is a medium-severity vulnerability in labstack echo, published on 28 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-118657 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/labstack/echo/v4 (Go): affected all versions; fixed in 4.16.0\n- github.com/labstack/echo/v4 (Go): affected all versions; fixed in 4.16.0\n- github.com/labstack/echo/v5 (Go): affected all versions; fixed in 5.4.0\n- github.com/labstack/echo/v5 (Go): affected all versions; fixed in 5.4.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-118657/ (Markdown: https://insights.sbomify.com/CVE-2026-118657/index.md)","id":"CVE-2026-118657","markdown":"https://insights.sbomify.com/CVE-2026-118657/index.md","name":"CVE-2026-118657","record":{"aliases":["DEBIAN-CVE-2026-118657","ECHO-931c-bced-8b2d","GHSA-2ffq-g2xg-c22p","UBUNTU-CVE-2026-118657"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-346","name":"Origin Validation Error"}],"description":"Echo is a Go web framework. Prior to 4.16.0 and 5.4.0, Context.Scheme unconditionally trusts forwarded scheme headers from any client. A client that reaches Echo directly over plaintext HTTP can claim an HTTPS scheme and bypass HTTPSRedirect because the request is treated as already secure. Separately, behind a TLS-terminating proxy that passes an attacker-controlled header, a claimed HTTP scheme can suppress the Strict-Transport-Security header even though the browser receives the response over HTTPS. The practical risk is reduced when a trusted proxy overwrites the headers and direct backend access is prevented, but the framework previously had no trusted-source configuration for this decision. This issue is fixed in 4.16.0 and 5.4.0.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Echo: HTTPS Redirect and HSTS Bypass via Unconditional Trust of Forwarded Scheme Headers","id":"CVE-2026-118657","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":null,"year":"2026"},"n_packages":4,"n_references":5,"next":{"headline":"Echo: Arbitrary Scheme Injection in WWWRedirect/NonWWWRedirect Middlewares via X-Forwarded-Proto","id":"CVE-2026-118658"},"packages":[{"ecosystem":"Go","fixed":["4.16.0"],"introduced":["0"],"last_affected":[],"package":"github.com/labstack/echo/v4","purl":null,"source":"GHSA-2ffq-g2xg-c22p"},{"ecosystem":"Go","fixed":["4.16.0"],"introduced":["0"],"last_affected":[],"package":"github.com/labstack/echo/v4","purl":"pkg:golang/github.com/labstack/echo/v4","source":"GHSA-2ffq-g2xg-c22p"},{"ecosystem":"Go","fixed":["5.4.0"],"introduced":["0"],"last_affected":[],"package":"github.com/labstack/echo/v5","purl":null,"source":"GHSA-2ffq-g2xg-c22p"},{"ecosystem":"Go","fixed":["5.4.0"],"introduced":["0"],"last_affected":[],"package":"github.com/labstack/echo/v5","purl":"pkg:golang/github.com/labstack/echo/v5","source":"GHSA-2ffq-g2xg-c22p"}],"prev":{"headline":"Echo: Open Redirect via Control-Character Prefix Defeating sanitizeURI","id":"CVE-2026-118656"},"products":["echo"],"published":"2026-10-28","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-28","vendors":["labstack"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-118657/"}