{"answers":{"affected":"2 open source packages ship an affected version, including 9router.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55638 exists.","fix":"Upgrade 9router to 0.5.2 or later.","what":"CVE-2026-55638 is a high-severity authentication bypass vulnerability in decolua 9router, published on 10 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-2026-55638 and fix it if it is affected.\n\nWhat it is: CVE-2026-55638 is a high-severity authentication bypass vulnerability in decolua 9router, published on 10 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55638 exists.\n\nAffected packages and fixed versions:\n- 9router (npm): affected all versions; fixed in 0.5.2\n- 9router (npm): affected all versions; fixed in 0.5.2\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-2026-55638/ (Markdown: https://insights.sbomify.com/CVE-2026-55638/index.md)","id":"CVE-2026-55638","markdown":"https://insights.sbomify.com/CVE-2026-55638/index.md","name":"CVE-2026-55638","record":{"aliases":["GHSA-8gmq-j984-vp4r"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"AI router proxy","requires_auth":"none","summary":"Unauthenticated attackers can bypass API key checks on the /codex endpoint to use stored LLM provider credentials for unauthorized upstream calls.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"},{"id":"CWE-862","name":"Missing Authorization"}],"description":"9Router is an AI router \u0026 token saver. Prior to 0.5.2, 9router protects /v1, /v1beta, /api/v1, and /api/v1beta in src/dashboardGuard.js but omits /codex before next.config.mjs rewrites /codex/* to /api/v1/responses. A remote unauthenticated attacker can send requests to /codex/* to bypass the API-key gate and cause the server to make upstream provider calls using operator-stored LLM provider credentials. This issue is fixed in version 0.5.2.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"9router: Unauthenticated LLM proxy access via /codex rewrite authorization bypass","id":"CVE-2026-55638","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Information disclosure in xrdp","id":"CVE-2026-55639"},"packages":[{"ecosystem":"npm","fixed":["0.5.2"],"introduced":["0"],"last_affected":[],"package":"9router","purl":null,"source":"GHSA-8gmq-j984-vp4r"},{"ecosystem":"npm","fixed":["0.5.2"],"introduced":["0"],"last_affected":[],"package":"9router","purl":"pkg:npm/9router","source":"GHSA-8gmq-j984-vp4r"}],"prev":{"headline":"genieacs-mcp: DNS rebinding reaches local GenieACS MCP Streamable HTTP transport","id":"CVE-2026-55637"},"products":["9router"],"published":"2026-07-10","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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-10","vendors":["decolua"]},"summary":"Unauthenticated attackers can bypass API key checks on the /codex endpoint to use stored LLM provider credentials for unauthorized upstream calls.","url":"https://insights.sbomify.com/CVE-2026-55638/"}