{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-109955 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-109955 is a medium-severity authentication bypass vulnerability in honojs hono, published on 13 Oct 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-2026-109955 and fix it if it is affected.\n\nWhat it is: CVE-2026-109955 is a medium-severity authentication bypass vulnerability in honojs hono, published on 13 Oct 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-2026-109955 in the wild and no public exploit code.\n\nAffected product: honojs hono. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-109955/ (Markdown: https://insights.sbomify.com/CVE-2026-109955/index.md)","id":"CVE-2026-109955","markdown":"https://insights.sbomify.com/CVE-2026-109955/index.md","name":"CVE-2026-109955","record":{"aliases":["GHSA-3g9q-qwv8-cxpf","RHSA-2026:84423","RHSA-2026:84431"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Hono web framework","requires_auth":"none","summary":"Attackers can bypass authentication middleware in Hono by exploiting double path decoding in serveStatic, accessing protected static files without credentials.","user_interaction":"not_required","vuln_class":"auth_bypass"},"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:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-174","name":"Double Decoding of the Same Data"}],"description":"Hono from 4.12.4 before 4.13.11 contains a middleware bypass vulnerability in serveStatic that allows unauthenticated attackers to skip prefix middleware by exploiting double path decoding. Attackers can send malformed percent-encoded paths that the router matches in encoded form, reaching static files without authentication checks running.","ecosystems":["Red Hat:hummingbird:1"],"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 4.12.4 before 4.13.11 Middleware Bypass via serveStatic Double Decoding","id":"CVE-2026-109955","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"NLTK through 3.10.3 Path Traversal via WekaClassifier Model Path","id":"CVE-2026-109956"},"packages":[{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:13.1.7-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"grafana13.1","purl":"pkg:rpm/redhat/grafana13.1","source":"RHSA-2026:84423"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:13.2.3-0.2.hum1"],"introduced":["0"],"last_affected":[],"package":"grafana13.2","purl":"pkg:rpm/redhat/grafana13.2","source":"RHSA-2026:84431"}],"prev":{"headline":"Parse Server 9.0.0 before 9.10.2-alpha.5 Transactional Batch Request Write Interference","id":"CVE-2026-109954"},"products":["hono"],"published":"2026-10-13","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"2026-10-13","vendors":["honojs"]},"summary":"Attackers can bypass authentication middleware in Hono by exploiting double path decoding in serveStatic, accessing protected static files without credentials.","url":"https://insights.sbomify.com/CVE-2026-109955/"}