{"answers":{"affected":"2 open source packages ship an affected version, including open-webui. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45665 exists.","fix":"Upgrade open-webui to 0.8.0 or later.","what":"CVE-2026-45665 is a high-severity cross-site scripting vulnerability in Openwebui Open Webui, published on 15 May 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-45665 and fix it if it is affected.\n\nWhat it is: CVE-2026-45665 is a high-severity cross-site scripting vulnerability in Openwebui Open Webui, published on 15 May 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45665 exists.\n\nAffected packages and fixed versions:\n- open-webui (npm): affected all versions; fixed in 0.8.0\n- open-webui (npm): affected all versions; fixed in 0.8.0\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-2026-45665/ (Markdown: https://insights.sbomify.com/CVE-2026-45665/index.md)","id":"CVE-2026-45665","markdown":"https://insights.sbomify.com/CVE-2026-45665/index.md","name":"CVE-2026-45665","record":{"aliases":["GHSA-cqp4-qqvg-3787"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Open WebUI","requires_auth":"high_privilege","summary":"A malicious administrator can inject scripts into the global banner to steal Super Admin session tokens, enabling privilege escalation.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"open_webui","vendor":"openwebui"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, a Stored Cross-Site Scripting (XSS) vulnerability exists in the Banner component due to an improper sanitization order (specifically, DOMPurify is executed before the marked library). This vulnerability allows a compromised or malicious administrator to plant a malicious payload in the global banner. Crucially, this vector enables Privilege Escalation, as the malicious banner is rendered for all users, including the Super Admin (Primary Admin). Consequently, the payload successfully bypasses the existing security mechanism. An attacker can leverage this to steal the Super Admin's session token This vulnerability is fixed in 0.8.0.","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":"Open WebUI: Stored XSS in Banner Component via Improper Sanitization Order","id":"CVE-2026-45665","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"openwebui:open_webui","products":["openwebui:open_webui"],"type":"xss","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"Open WebUI: Indirect Object Reference (IDOR) in user notes","id":"CVE-2026-45666"},"packages":[{"ecosystem":"npm","fixed":["0.8.0"],"introduced":["0"],"last_affected":[],"package":"open-webui","purl":null,"source":"GHSA-cqp4-qqvg-3787"},{"ecosystem":"npm","fixed":["0.8.0"],"introduced":["0"],"last_affected":[],"package":"open-webui","purl":"pkg:npm/open-webui","source":"GHSA-cqp4-qqvg-3787"}],"prev":{"headline":"ImageMagick: Policy Bypass in MNG coder could","id":"CVE-2026-45664"},"products":["open-webui"],"published":"2026-05-15","related":[{"cvss_score":9.1,"headline":"Open WebUI: LDAP Empty Password Authentication Bypass","id":"CVE-2026-44551","kev_date_added":null,"published":"2026-05-15"},{"cvss_score":9,"headline":"open-webui - Remote Code Execution via CORS Misconfiguration and Session Validation","id":"CVE-2026-56400","kev_date_added":null,"published":"2026-07-15"},{"cvss_score":9,"headline":"Cross-site Scripting (XSS) in open-webui/open-webui","id":"CVE-2024-8017","kev_date_added":null,"published":"2025-03-20"},{"cvss_score":8.8,"headline":"Open WebUI: Jupyter code execution works despite `ENABLE_CODE_EXECUTION=false` — feature gate bypassed","id":"CVE-2026-45672","kev_date_added":null,"published":"2026-05-15"},{"cvss_score":8.7,"headline":"Open WebUI: Same-origin XSS to account takeover via terminal port-preview iframe hardcoding allow-same-origin","id":"CVE-2026-87995","kev_date_added":null,"published":"2026-09-09"},{"cvss_score":8.7,"headline":"Open WebUI: Stored XSS via unescaped KaTeX render-error fallback in rendered messages","id":"CVE-2026-70492","kev_date_added":null,"published":"2026-08-04"},{"cvss_score":8.7,"headline":"Open WebUI: Stored XSS in Mermaid Markdown Preview","id":"CVE-2026-54011","kev_date_added":null,"published":"2026-06-23"}],"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":"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":"2026-05-18","vendors":["open-webui"]},"summary":"A malicious administrator can inject scripts into the global banner to steal Super Admin session tokens, enabling privilege escalation.","url":"https://insights.sbomify.com/CVE-2026-45665/"}