{"answers":{"affected":"3 open source packages ship an affected version, including nicegui. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-66469 exists.","fix":"Upgrade nicegui to 3.4.0 or later.","what":"CVE-2025-66469 is a medium-severity cross-site scripting vulnerability in zauberzeug nicegui, published on 8 Dec 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2025-66469 and fix it if it is affected.\n\nWhat it is: CVE-2025-66469 is a medium-severity cross-site scripting vulnerability in zauberzeug nicegui, published on 8 Dec 2025. An attacker can exploit it over the internet without logging in, 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-2025-66469 exists.\n\nAffected packages and fixed versions:\n- nicegui (PyPI): affected all versions; fixed in 3.4.0\n- nicegui (PyPI): affected all versions; fixed in 3.4.0\n- nicegui (PyPI): affected all versions; fixed in 3.4.0\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-2025-66469/ (Markdown: https://insights.sbomify.com/CVE-2025-66469/index.md)","id":"CVE-2025-66469","markdown":"https://insights.sbomify.com/CVE-2025-66469/index.md","name":"CVE-2025-66469","record":{"aliases":["GHSA-72qc-wxch-74mg","PYSEC-2026-1697"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Python UI framework","requires_auth":"none","summary":"Attackers can execute arbitrary JavaScript via reflected XSS in NiceGUI's CSS/SCSS/SASS injection functions due to lack of sanitization.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"nicegui","vendor":"zauberzeug"}],"cvss":{"score":6.1,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"NiceGUI is a Python-based UI framework. Versions 3.3.1 and below are vulnerable to Reflected XSS through its ui.add_css, ui.add_scss, and ui.add_sass functions. The functions lack proper sanitization or encoding for the JavaScript context they generate. An attacker can break out of the intended \u003cstyle\u003e or \u003cscript\u003e tags by injecting closing tags (e.g., \u003c/style\u003e or \u003c/script\u003e), allowing for the execution of arbitrary JavaScript. This issue is fixed in version 3.4.0.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"NiceGUI Reflected XSS in ui.add_css, ui.add_scss, and ui.add_sass via Style Injection","id":"CVE-2025-66469","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"xss","year":"2025"},"n_packages":3,"n_references":2,"next":{"headline":"NiceGUI Stored/Reflected XSS in ui.interactive_image via unsanitized SVG content","id":"CVE-2025-66470"},"packages":[{"ecosystem":"PyPI","fixed":["3.4.0"],"introduced":["0"],"last_affected":[],"package":"nicegui","purl":null,"source":"GHSA-72qc-wxch-74mg"},{"ecosystem":"PyPI","fixed":["3.4.0"],"introduced":["0"],"last_affected":[],"package":"nicegui","purl":"pkg:pypi/nicegui","source":"GHSA-72qc-wxch-74mg"},{"ecosystem":"PyPI","fixed":["3.4.0"],"introduced":["0"],"last_affected":[],"package":"nicegui","purl":"pkg:pypi/nicegui","source":"PYSEC-2026-1697"}],"prev":{"headline":"Aimeos GrapesJS CMS extension possible stores XSS exploitable by authenticated editors","id":"CVE-2025-66468"},"products":["nicegui"],"published":"2025-12-08","related":[{"cvss_score":7.5,"headline":"NiceGUI's Path Traversal via Unsanitized FileUpload.name Enables Arbitrary File Write","id":"CVE-2026-25732","kev_date_added":null,"published":"2026-02-06"},{"cvss_score":7.5,"headline":"NiceGUI Path Traversal Vulnerability in app.add_media_files() Allows Arbitrary File Reading","id":"CVE-2025-66645","kev_date_added":null,"published":"2025-12-09"},{"cvss_score":7.2,"headline":"Zero-click XSS in all NiceGUI apps which uses `ui.sub_pages`","id":"CVE-2026-21873","kev_date_added":null,"published":"2026-01-08"},{"cvss_score":6.9,"headline":"NiceGUI's unvalidated chunk size parameter in media routes can cause memory exhaustion","id":"CVE-2026-33332","kev_date_added":null,"published":"2026-03-24"},{"cvss_score":6.1,"headline":"NiceGUI has XSS via Code Injection","id":"CVE-2026-27156","kev_date_added":null,"published":"2026-02-24"},{"cvss_score":6.1,"headline":"NiceGUI's XSS vulnerability in ui.markdown() allows arbitrary JavaScript execution through unsanitized HTML content","id":"CVE-2026-25516","kev_date_added":null,"published":"2026-02-06"},{"cvss_score":6.1,"headline":"NiceGUI is vulnerable to XSS via Unescaped URL in ui.navigate.history.push() / replace()","id":"CVE-2026-21871","kev_date_added":null,"published":"2026-01-08"}],"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":"PyPA Advisory Database","prefix":"PYSEC"},{"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":"partial"},"state":"PUBLISHED","updated":"2025-12-09","vendors":["zauberzeug"]},"summary":"Attackers can execute arbitrary JavaScript via reflected XSS in NiceGUI's CSS/SCSS/SASS injection functions due to lack of sanitization.","url":"https://insights.sbomify.com/CVE-2025-66469/"}