{"answers":{"affected":"2 open source packages ship an affected version, including hono. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-47674 in the wild and no public exploit code.","fix":"Upgrade hono to 4.12.21 or later.","what":"CVE-2026-47674 is a medium-severity vulnerability in honojs hono, published on 28 May 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-2026-47674 and fix it if it is affected.\n\nWhat it is: CVE-2026-47674 is a medium-severity vulnerability in honojs hono, published on 28 May 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-2026-47674 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-2026-47674/ (Markdown: https://insights.sbomify.com/CVE-2026-47674/index.md)","id":"CVE-2026-47674","markdown":"https://insights.sbomify.com/CVE-2026-47674/index.md","name":"CVE-2026-47674","record":{"aliases":["ECHO-5f09-2722-7d3a","GHSA-xrhx-7g5j-rcj5","MINI-3xxm-4vxg-c8gh","MINI-4ppx-hc27-jfjf","MINI-628p-39mc-8937","MINI-6m5h-8xf7-685f","MINI-8449-483m-mv2m","MINI-8w33-xg2v-338h","MINI-fw55-fc6x-4whx","MINI-g458-qpqx-c9vj","MINI-mmrq-c55p-4663","MINI-mr86-97ww-rqx5","MINI-pvph-hr6q-6jmg","ROOT-APP-NPM-CVE-2026-47674"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Hono web framework","requires_auth":"none","summary":"Attackers can bypass IP restriction rules in Hono by using non-canonical IPv6 formats, allowing unauthorized access to protected resources.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"hono","vendor":"hono"}],"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-185","name":"Incorrect Regular Expression"},{"id":"CWE-1289","name":"Improper Validation of Unsafe Equivalence in Input"}],"description":"Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the ip-restriction middleware (hono/ip-restriction) compares incoming IP addresses against configured deny and allow rules using string equality after partial normalization. Non-canonical IPv6 representations of an address already listed in a static rule — such as compressed forms, explicit-zero forms, or hex-notation IPv4-mapped addresses — do not match the normalized rule entry, causing the rule to be silently skipped. 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: IP Restriction bypasses static deny rules for non-canonical IPv6","id":"CVE-2026-47674","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"security_feature_bypass","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"Hono: Cookie helper does not sanitize sameSite and priority, allowing Set-Cookie injection","id":"CVE-2026-47675"},"packages":[{"ecosystem":"npm","fixed":["4.12.21"],"introduced":["0"],"last_affected":[],"package":"hono","purl":null,"source":"GHSA-xrhx-7g5j-rcj5"},{"ecosystem":"npm","fixed":["4.12.21"],"introduced":["0"],"last_affected":[],"package":"hono","purl":"pkg:npm/hono","source":"GHSA-xrhx-7g5j-rcj5"}],"prev":{"headline":"Hono: JWT middleware accepts any Authorization scheme, not only Bearer","id":"CVE-2026-47673"},"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-02","vendors":["honojs"]},"summary":"Attackers can bypass IP restriction rules in Hono by using non-canonical IPv6 formats, allowing unauthorized access to protected resources.","url":"https://insights.sbomify.com/CVE-2026-47674/"}