{"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-2026-33031 exists.","fix":"Upgrade github.com/0xJacky/Nginx-UI to 1.9.10-0.20260314152518-7b66578adb47 or later.","what":"CVE-2026-33031 is a high-severity authentication bypass vulnerability in 0xJacky nginx-ui, published on 20 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-33031 and fix it if it is affected.\n\nWhat it is: CVE-2026-33031 is a high-severity authentication bypass vulnerability in 0xJacky nginx-ui, published on 20 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33031 exists.\n\nAffected packages and fixed versions:\n- github.com/0xJacky/Nginx-UI (Go): affected all versions; fixed in 1.9.10-0.20260314152518-7b66578adb47\n- github.com/0xJacky/Nginx-UI (Go): affected all versions; fixed in 1.9.10-0.20260314152518-7b66578adb47\n- github.com/0xJacky/Nginx-UI (Go): affected all versions; fixed in 1.9.10-0.20260314152518-7b66578adb47\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-2026-33031/ (Markdown: https://insights.sbomify.com/CVE-2026-33031/index.md)","id":"CVE-2026-33031","markdown":"https://insights.sbomify.com/CVE-2026-33031/index.md","name":"CVE-2026-33031","record":{"aliases":["GHSA-x234-x5vq-cc2v","GO-2026-5733"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["privilege_escalation","data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Nginx web UI","requires_auth":"low_privilege","summary":"Disabled users retain API access via old tokens, allowing attackers to read, modify data, and escalate privileges in 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":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"},{"id":"CWE-284","name":"Improper Access Control"}],"description":"Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, a user who was disabled by an administrator can use previously issued API tokens for up to the token lifetime. In practice, disabling a compromised account does not actually terminate that user’s access, so an attacker who already stole a JWT can continue reading and modifying protected resources after the account is marked disabled. Since tokens can be used to create new accounts, it is possible the disabled user to maintain the privilege. Version 2.3.4 patches the issue.","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: Disabled users retain full API access through previously issued bearer tokens","id":"CVE-2026-33031","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: Unauthenticated MCP Endpoint Allows Remote Nginx Takeover","id":"CVE-2026-33032"},"packages":[{"ecosystem":"Go","fixed":["1.9.10-0.20260314152518-7b66578adb47"],"introduced":["0"],"last_affected":[],"package":"github.com/0xJacky/Nginx-UI","purl":null,"source":"GHSA-x234-x5vq-cc2v"},{"ecosystem":"Go","fixed":["1.9.10-0.20260314152518-7b66578adb47"],"introduced":["0"],"last_affected":[],"package":"github.com/0xJacky/Nginx-UI","purl":"pkg:golang/github.com/0xJacky/Nginx-UI","source":"GHSA-x234-x5vq-cc2v"},{"ecosystem":"Go","fixed":["1.9.10-0.20260314152518-7b66578adb47"],"introduced":["0"],"last_affected":[],"package":"github.com/0xJacky/Nginx-UI","purl":"pkg:golang/github.com/0xJacky/Nginx-UI","source":"GO-2026-5733"}],"prev":{"headline":"Nginx UI: Unencrypted Storage of DNS API Tokens and ACME Private Keys","id":"CVE-2026-33030"},"products":["nginx-ui"],"published":"2026-04-20","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":"2026-04-21","vendors":["0xJacky"]},"summary":"Disabled users retain API access via old tokens, allowing attackers to read, modify data, and escalate privileges in Nginx UI.","url":"https://insights.sbomify.com/CVE-2026-33031/"}