{"answers":{"affected":"2 open source packages ship an affected version, including hono.","exploited":"There is no known exploitation of CVE-2025-71381 in the wild and no public exploit code.","fix":"Upgrade hono to 4.10.3 or later.","what":"CVE-2025-71381 is a medium-severity vulnerability in Hono, published on 30 Jun 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-2025-71381 and fix it if it is affected.\n\nWhat it is: CVE-2025-71381 is a medium-severity vulnerability in Hono, published on 30 Jun 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-2025-71381 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- hono (npm): affected all versions; fixed in 4.10.3\n- hono (npm): affected all versions; fixed in 4.10.3\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-2025-71381/ (Markdown: https://insights.sbomify.com/CVE-2025-71381/index.md)","id":"CVE-2025-71381","markdown":"https://insights.sbomify.com/CVE-2025-71381/index.md","name":"CVE-2025-71381","record":{"aliases":["GHSA-q7jf-gf43-6x6p","MINI-vq54-q62q-3hqm"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass","other"],"network_reachable":"yes","non_default_config":false,"product_category":"Hono web framework","requires_auth":"none","summary":"Attackers can inject Vary headers via CORS middleware, causing cache pollution and inconsistent CORS enforcement in shared cache environments.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-113","name":"Improper Neutralization of CRLF Sequences in HTTP Headers"}],"description":"Hono before 4.10.3 contains a flaw in its CORS middleware: when the origin is not set to \"*\", the middleware copies the Vary header from the incoming request into the response. Because Vary is a response header that should be managed by the server, an attacker can supply arbitrary Vary values that are reflected into the response, potentially causing cache key pollution and inconsistent CORS enforcement in environments that rely on shared caches or proxies.","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 - Vary Header Injection in CORS Middleware","id":"CVE-2025-71381","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"other","year":"2025"},"n_packages":2,"n_references":2,"next":{"headline":"MuPDF \u003c 1.27.0-rc1 Stack Exhaustion DoS via EPUB CSS Rendering","id":"CVE-2025-71382"},"packages":[{"ecosystem":"npm","fixed":["4.10.3"],"introduced":["0"],"last_affected":[],"package":"hono","purl":null,"source":"GHSA-q7jf-gf43-6x6p"},{"ecosystem":"npm","fixed":["4.10.3"],"introduced":["0"],"last_affected":[],"package":"hono","purl":"pkg:npm/hono","source":"GHSA-q7jf-gf43-6x6p"}],"prev":{"headline":"n8n - Arbitrary Command Execution via Execute Command Node","id":"CVE-2025-71380"},"products":["Hono"],"published":"2026-06-30","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-29","vendors":["Hono"]},"summary":"Attackers can inject Vary headers via CORS middleware, causing cache pollution and inconsistent CORS enforcement in shared cache environments.","url":"https://insights.sbomify.com/CVE-2025-71381/"}