{"answers":{"affected":"2 open source packages ship an affected version, including hono. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-47673 in the wild and no public exploit code.","fix":"Upgrade hono to 4.12.21 or later.","what":"CVE-2026-47673 is a medium-severity vulnerability in honojs hono, published on 28 May 2026."},"fix_prompt":"Check this codebase for CVE-2026-47673 and fix it if it is affected.\n\nWhat it is: CVE-2026-47673 is a medium-severity vulnerability in honojs hono, published on 28 May 2026. \nExploitation: There is no known exploitation of CVE-2026-47673 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- hono (npm): affected all versions; fixed in 4.12.21\n- hono (npm): affected all versions; fixed in 4.12.21\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-2026-47673/ (Markdown: https://insights.sbomify.com/CVE-2026-47673/index.md)","id":"CVE-2026-47673","markdown":"https://insights.sbomify.com/CVE-2026-47673/index.md","name":"CVE-2026-47673","record":{"aliases":["ECHO-37b1-b06d-808f","GHSA-f577-qrjj-4474","MINI-2ccx-wj8f-4f8f","MINI-2v7h-hpfm-qg4r","MINI-7q9f-9qj4-98cr","MINI-99j4-jjv5-6jvp","MINI-c3q7-xw6f-p7m5","MINI-c496-2w45-r534","MINI-ffh5-prm2-6jp5","MINI-h4jf-gq5m-88j4","MINI-h9f3-7fpc-7cmj","MINI-qfhj-36ph-qppx","MINI-xq33-8fpr-69gj","ROOT-APP-NPM-CVE-2026-47673"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[{"product":"hono","vendor":"hono"}],"cvss":{"score":4.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-285","name":"Improper Authorization"}],"description":"Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the jwt and jwk middlewares do not verify that the Authorization header value uses theBearer scheme. Any two-part header value — regardless of the scheme name in the first position — proceeds to JWT verification. A request presenting a valid JWT under a non-Bearer scheme identifier (such as Basic or Token) is authenticated identically to a correctly formed Bearer request. This vulnerability is fixed in 4.12.21.","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: JWT middleware accepts any Authorization scheme, not only Bearer","id":"CVE-2026-47673","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":null,"year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"Hono: IP Restriction bypasses static deny rules for non-canonical IPv6","id":"CVE-2026-47674"},"packages":[{"ecosystem":"npm","fixed":["4.12.21"],"introduced":["0"],"last_affected":[],"package":"hono","purl":null,"source":"GHSA-f577-qrjj-4474"},{"ecosystem":"npm","fixed":["4.12.21"],"introduced":["0"],"last_affected":[],"package":"hono","purl":"pkg:npm/hono","source":"GHSA-f577-qrjj-4474"}],"prev":{"headline":"epa4all-client: Unauthenticated REST API for Patient Record Writes","id":"CVE-2026-47672"},"products":["hono"],"published":"2026-05-28","related":[{"cvss_score":8.2,"headline":"Hono is Vulnerable to Authentication Bypass by IP Spoofing in AWS Lambda ALB conninfo","id":"CVE-2026-27700","kev_date_added":null,"published":"2026-02-25"},{"cvss_score":8.2,"headline":"JWT Algorithm Confusion via Unsafe Default (HS256) in Hono JWT Middleware Allows Token Forgery and Auth Bypass","id":"CVE-2026-22817","kev_date_added":null,"published":"2026-01-13"},{"cvss_score":8.2,"headline":"JWT algorithm confusion in Hono JWK Auth Middleware when JWK lacks \"alg\" (untrusted header.alg fallback)","id":"CVE-2026-22818","kev_date_added":null,"published":"2026-01-13"},{"cvss_score":8.1,"headline":"Hono Improperly Authorizes JWT Audience Validation","id":"CVE-2025-62610","kev_date_added":null,"published":"2025-10-22"},{"cvss_score":7.5,"headline":"Hono: Arbitrary file access via serveStatic vulnerability","id":"CVE-2026-29045","kev_date_added":null,"published":"2026-03-04"},{"cvss_score":7.5,"headline":"Hono contains a flaw in URL path parsing, potentially leading to path confusion","id":"CVE-2025-58362","kev_date_added":null,"published":"2025-09-04"},{"cvss_score":6.5,"headline":"hono/jsx does not isolate context per request, leading to cross-request data disclosure","id":"CVE-2026-59896","kev_date_added":null,"published":"2026-07-08"}],"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":"US public information, NVD API terms","name":"NVD"},{"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":"2026-05-30","vendors":["honojs"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-47673/"}