{"answers":{"affected":"3 open source packages ship an affected version, including github.com/0xJacky/nginx-ui. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42222 exists.","fix":"No fix published yet.","what":"CVE-2026-42222 is a high-severity authentication bypass vulnerability in 0xJacky nginx-ui, published on 4 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-2026-42222 and fix it if it is affected.\n\nWhat it is: CVE-2026-42222 is a high-severity authentication bypass vulnerability in 0xJacky nginx-ui, published on 4 May 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-2026-42222 exists.\n\nAffected packages and fixed versions:\n- github.com/0xJacky/nginx-ui (Go): affected all versions; no fix listed\n- github.com/0xJacky/nginx-ui (Go): affected all versions; no fix listed\n- github.com/0xJacky/nginx-ui (Go): affected all versions; no fix listed\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-2026-42222/ (Markdown: https://insights.sbomify.com/CVE-2026-42222/index.md)","id":"CVE-2026-42222","markdown":"https://insights.sbomify.com/CVE-2026-42222/index.md","name":"CVE-2026-42222","record":{"aliases":["GHSA-mxqh-q9h6-v8pq","GO-2026-5521"],"analysis":{"component_type":"web_application","fix_type":"no_fix_stated","impacts":["privilege_escalation","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Nginx web UI","requires_auth":"none","summary":"Unauthenticated attackers can claim the initial installation instance via the install API, gaining administrative control over the Nginx UI.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"nginx_ui","vendor":"nginxui"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"},{"id":"CWE-284","name":"Improper Access Control"}],"description":"Nginx UI is a web user interface for the Nginx web server. In version 2.3.5, an unauthenticated bootstrap takeover exists in nginx-ui during the initial installation window exposed by POST /api/install. At time of publication no public patches are available.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"nginx-ui: Unauthenticated first-boot instance claim via POST /api/install allows remote bootstrap takeover","id":"CVE-2026-42222","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":3,"n_references":1,"next":{"headline":"nginx-ui: Settings API Exposes Protected Secrets","id":"CVE-2026-42223"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":[],"last_affected":[],"package":"github.com/0xJacky/nginx-ui","purl":null,"source":"GHSA-mxqh-q9h6-v8pq"},{"ecosystem":"Go","fixed":[],"introduced":[],"last_affected":[],"package":"github.com/0xJacky/nginx-ui","purl":"pkg:golang/github.com/0xJacky/nginx-ui","source":"GHSA-mxqh-q9h6-v8pq"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/0xJacky/nginx-ui","purl":"pkg:golang/github.com/0xJacky/nginx-ui","source":"GO-2026-5521"}],"prev":{"headline":"nginx-ui: Unauthenticated First-Run Installer Allows Remote Initial Admin Claim","id":"CVE-2026-42221"},"products":["nginx-ui"],"published":"2026-05-04","related":[{"cvss_score":9.8,"headline":"Nginx UI: Unauthenticated MCP Endpoint Allows Remote Nginx Takeover","id":"CVE-2026-33032","kev_date_added":null,"published":"2026-03-30"},{"cvss_score":9.8,"headline":"Nginx UI: Unauthenticated Backup Download with Encryption Key Disclosure","id":"CVE-2026-27944","kev_date_added":null,"published":"2026-03-05"},{"cvss_score":9.8,"headline":"Nginx-UI arbitrary file write through the Import Certificate feature","id":"CVE-2024-23827","kev_date_added":null,"published":"2024-01-29"},{"cvss_score":9.4,"headline":"Nginx UI: Authenticated Remote Code Execution via Backup Restore App Config Overwrite","id":"CVE-2026-107806","kev_date_added":null,"published":"2026-10-09"},{"cvss_score":9.4,"headline":"nginx-ui Backup Restore Allows Tampering with Encrypted Backups","id":"CVE-2026-33026","kev_date_added":null,"published":"2026-03-30"},{"cvss_score":9,"headline":"Unauthenticated Remote Code Execution via Backup Restore in nginx-ui","id":"CVE-2026-42238","kev_date_added":null,"published":"2026-05-04"},{"cvss_score":8.9,"headline":"Unchecked logrotate settings lead to arbitrary command execution","id":"CVE-2024-49368","kev_date_added":null,"published":"2024-10-21"}],"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":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-06","vendors":["0xJacky"]},"summary":"Unauthenticated attackers can claim the initial installation instance via the install API, gaining administrative control over the Nginx UI.","url":"https://insights.sbomify.com/CVE-2026-42222/"}