{"answers":{"affected":"2 open source packages ship an affected version, including hono.","exploited":"There is no known exploitation of CVE-2026-84363 in the wild and no public exploit code.","fix":"Upgrade hono to 4.13.5 or later.","what":"CVE-2026-84363 is a medium-severity vulnerability in honojs hono, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-84363 and fix it if it is affected.\n\nWhat it is: CVE-2026-84363 is a medium-severity vulnerability in honojs hono, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-84363 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- hono (npm): affected all versions; fixed in 4.13.5\n- hono (npm): affected all versions; fixed in 4.13.5\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-2026-84363/ (Markdown: https://insights.sbomify.com/CVE-2026-84363/index.md)","id":"CVE-2026-84363","markdown":"https://insights.sbomify.com/CVE-2026-84363/index.md","name":"CVE-2026-84363","record":{"aliases":["CLEANSTART-2026-ZF21057","ECHO-5f0c-baeb-506a","GHSA-crvj-82cr-hjcx","MINI-3hcc-xhhv-r5fx","MINI-5w8w-rf6w-cpmc","MINI-g3qp-46mm-676v","MINI-m849-qg66-jmh3","MINI-pq8h-76jc-ph4r","MINI-qvvq-5vm6-4qw5","MINI-v86c-j5rx-4c82","MINI-xr7h-r86m-2632"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass","data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"JavaScript web framework","requires_auth":"none","summary":"Hono framework mishandles query parameters after URL fragments, allowing cache poisoning, filtering bypass, and potential XSS in specific runtime environments.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-444","name":"Inconsistent Interpretation of HTTP Requests"}],"description":"Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.13.5, Hono's query helpers treat a question mark after a literal hash fragment as the start of a query string, so the application can read request parameters that browsers, new URL(), reverse proxies, filtering rules, parameter allow and deny lists, access logging, request validation, and other middleware do not observe. The Cache Middleware removes the fragment when building its cache key, allowing a response influenced by parameters inside the fragment to be stored under a key that omits those parameters and later served to other users. This can bypass filtering and auditing, poison cached responses, and enable stored cross-site scripting when an affected parameter is reflected into cached HTML without escaping. Exploitation requires a runtime and intermediary path that passes a literal hash character through to the request URL; Cloudflare Workers and intermediaries that strip fragments are not affected. This issue is fixed in version 4.13.5.","ecosystems":["npm"],"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":"Hono: Query parser reads parameters after the URL fragment, causing cache-key and proxy interpretation differentials","id":"CVE-2026-84363","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"other","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Hono: Unbounded dot-notation nesting in `parseBody()` can cause memory exhaustion","id":"CVE-2026-84364"},"packages":[{"ecosystem":"npm","fixed":["4.13.5"],"introduced":["0"],"last_affected":[],"package":"hono","purl":null,"source":"GHSA-crvj-82cr-hjcx"},{"ecosystem":"npm","fixed":["4.13.5"],"introduced":["0"],"last_affected":[],"package":"hono","purl":"pkg:npm/hono","source":"GHSA-crvj-82cr-hjcx"}],"prev":{"headline":"Composer: Perforce source URL permits P4PORT `rsh:` command execution","id":"CVE-2026-84361"},"products":["hono"],"published":"2026-09-01","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-02","vendors":["honojs"]},"summary":"Hono framework mishandles query parameters after URL fragments, allowing cache poisoning, filtering bypass, and potential XSS in specific runtime environments.","url":"https://insights.sbomify.com/CVE-2026-84363/"}