{"answers":{"affected":"2 open source packages ship an affected version, including hono. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-59897 in the wild and no public exploit code.","fix":"Upgrade hono to 4.12.27 or later.","what":"CVE-2026-59897 is a medium-severity vulnerability in honojs hono, published on 8 Jul 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-2026-59897 and fix it if it is affected.\n\nWhat it is: CVE-2026-59897 is a medium-severity vulnerability in honojs hono, published on 8 Jul 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-2026-59897 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- hono (npm): affected from 4.3.3; fixed in 4.12.27\n- hono (npm): affected from 4.3.3; fixed in 4.12.27\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-2026-59897/ (Markdown: https://insights.sbomify.com/CVE-2026-59897/index.md)","id":"CVE-2026-59897","markdown":"https://insights.sbomify.com/CVE-2026-59897/index.md","name":"CVE-2026-59897","record":{"aliases":["CLEANSTART-2026-AS71906","ECHO-f0d8-e683-de6b","GHSA-xgm2-5f3f-mvvc","MINI-4w55-6rq5-g7jw","MINI-53q4-5p3c-hhhw","MINI-5mp4-7c39-59j6","MINI-72gw-vp66-fcmp","MINI-8pwj-jq7x-2jrj","MINI-c2q3-f66h-8x27","MINI-f29x-vj9v-3w25","MINI-f73h-4f7r-vv53","MINI-g6hh-x9fj-jg5g","MINI-x5m8-87rj-qq9g","MINI-xcf9-grv5-48x4"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript web framework","requires_auth":"none","summary":"Attackers can cause incomplete header data processing in Hono's AWS API Gateway adapter, potentially bypassing security controls like rate limiting or audit logging.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","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-348","name":"Use of Less Trusted Source"}],"description":"Hono is a Web application framework that provides support for any JavaScript runtime. From 4.3.3 before 4.12.27, the AWS API Gateway v1 adapter can drop a distinct repeated request header value because it de-duplicates values using a substring comparison instead of an exact match, so middleware or application logic that depends on the complete X-Forwarded-For chain, rate limiting, audit logging, or proxy-chain validation can receive incomplete data. This issue is fixed in version 4.12.27.","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: API Gateway v1 adapter can drop a distinct repeated request header value during de-duplication","id":"CVE-2026-59897","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Netty: WebSockets V07/V08 handshaker missing Connection/Upgrade validation","id":"CVE-2026-59898"},"packages":[{"ecosystem":"npm","fixed":["4.12.27"],"introduced":["4.3.3"],"last_affected":[],"package":"hono","purl":null,"source":"GHSA-xgm2-5f3f-mvvc"},{"ecosystem":"npm","fixed":["4.12.27"],"introduced":["4.3.3"],"last_affected":[],"package":"hono","purl":"pkg:npm/hono","source":"GHSA-xgm2-5f3f-mvvc"}],"prev":{"headline":"hono/jsx does not isolate context per request, leading to cross-request data disclosure","id":"CVE-2026-59896"},"products":["hono"],"published":"2026-07-08","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":"2026-07-09","vendors":["honojs"]},"summary":"Attackers can cause incomplete header data processing in Hono's AWS API Gateway adapter, potentially bypassing security controls like rate limiting or audit logging.","url":"https://insights.sbomify.com/CVE-2026-59897/"}