{"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-2026-118652 in the wild and no public exploit code.","fix":"Upgrade github.com/labstack/echo/v4 to 4.16.0 or later.","what":"CVE-2026-118652 is a medium-severity vulnerability in labstack echo, published on 28 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-118652 and fix it if it is affected.\n\nWhat it is: CVE-2026-118652 is a medium-severity vulnerability in labstack echo, published on 28 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-118652 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-2026-118652/ (Markdown: https://insights.sbomify.com/CVE-2026-118652/index.md)","id":"CVE-2026-118652","markdown":"https://insights.sbomify.com/CVE-2026-118652/index.md","name":"CVE-2026-118652","record":{"aliases":["DEBIAN-CVE-2026-118652","ECHO-b997-6e99-fafb","GHSA-h9g5-28mm-hx3g","UBUNTU-CVE-2026-118652"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[],"cvss":{"score":6.1,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Echo is a Go web framework. Prior to 4.16.0 and 5.4.0, Context.JSONP and Context.JSONPBlob concatenate an unvalidated callback value into a JavaScript response. A route that passes attacker-controlled input as the callback can return executable script syntax, allowing reflected cross-site scripting when a user loads the crafted response. The vulnerable jsonPBlob path performs no callback validation or escaping, and exploitation requires an application route that exposes attacker control over the callback argument. 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: Reflected Cross-Site Scripting (XSS) via unsanitized JSONP callback in Context.JSONP / Context.JSONPBlob","id":"CVE-2026-118652","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: Rate Limiter Bypass via Spoofed X-Forwarded-For Header in Default Configuration","id":"CVE-2026-118653"},"packages":[{"ecosystem":"Go","fixed":["4.16.0"],"introduced":["0"],"last_affected":[],"package":"github.com/labstack/echo/v4","purl":null,"source":"GHSA-h9g5-28mm-hx3g"},{"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-h9g5-28mm-hx3g"},{"ecosystem":"Go","fixed":["5.4.0"],"introduced":["0"],"last_affected":[],"package":"github.com/labstack/echo/v5","purl":null,"source":"GHSA-h9g5-28mm-hx3g"},{"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-h9g5-28mm-hx3g"}],"prev":{"headline":"Echo: Reverse Proxy Forwards Attacker-Supplied X-Real-IP to Upstream by Default","id":"CVE-2026-118651"},"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-2026-118652/"}