{"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-2026-118653 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-118653 is a medium-severity vulnerability in labstack echo, published on 28 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-118653 and fix it if it is affected.\n\nWhat it is: CVE-2026-118653 is a medium-severity vulnerability in labstack echo, published on 28 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-118653 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/labstack/echo/v4 (Go): affected from 4.0.0 up to 4.16.2; no fix listed\n- github.com/labstack/echo/v4 (Go): affected from 4.0.0 up to 4.16.2; no fix listed\n- github.com/labstack/echo/v5 (Go): affected all versions; fixed in 5.1.0\n- github.com/labstack/echo/v5 (Go): affected all versions; fixed in 5.1.0\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-2026-118653/ (Markdown: https://insights.sbomify.com/CVE-2026-118653/index.md)","id":"CVE-2026-118653","markdown":"https://insights.sbomify.com/CVE-2026-118653/index.md","name":"CVE-2026-118653","record":{"aliases":["DEBIAN-CVE-2026-118653","GHSA-246p-cpwv-v3jq","UBUNTU-CVE-2026-118653"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-290","name":"Authentication Bypass by Spoofing"}],"description":"Echo is a Go web framework. From 4.0.0 until 5.1.0, Context.RealIP falls back to client-supplied X-Forwarded-For or X-Real-IP values when Echo.IPExtractor is unset, and the default RateLimiter uses that result as its client identifier. A remote attacker can rotate arbitrary forwarded-address values to obtain new rate-limit buckets and bypass IP-based throttling used for controls such as brute-force or request-volume protection. This issue is fixed in Echo v5.1.0.","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: Rate Limiter Bypass via Spoofed X-Forwarded-For Header in Default Configuration","id":"CVE-2026-118653","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":null,"year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"Echo static file middleware route protection bypass via encoded dot-dot traversal","id":"CVE-2026-118654"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["4.0.0"],"last_affected":["4.16.2"],"package":"github.com/labstack/echo/v4","purl":null,"source":"GHSA-246p-cpwv-v3jq"},{"ecosystem":"Go","fixed":[],"introduced":["4.0.0"],"last_affected":["4.16.2"],"package":"github.com/labstack/echo/v4","purl":"pkg:golang/github.com/labstack/echo/v4","source":"GHSA-246p-cpwv-v3jq"},{"ecosystem":"Go","fixed":["5.1.0"],"introduced":["0"],"last_affected":[],"package":"github.com/labstack/echo/v5","purl":null,"source":"GHSA-246p-cpwv-v3jq"},{"ecosystem":"Go","fixed":["5.1.0"],"introduced":["0"],"last_affected":[],"package":"github.com/labstack/echo/v5","purl":"pkg:golang/github.com/labstack/echo/v5","source":"GHSA-246p-cpwv-v3jq"}],"prev":{"headline":"Echo: Reflected Cross-Site Scripting (XSS) via unsanitized JSONP callback in Context.JSONP / Context.JSONPBlob","id":"CVE-2026-118652"},"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-2026-118653/"}