{"cve":"CVE-2025-66645","nvd":{"published":"2025-12-09T22:16:15.930","modified":"2026-10-14T21:10:00.183","status":"Analyzed","description":"NiceGUI is a Python-based UI framework. Versions 3.3.1 and below are vulnerable to  directory traversal through the App.add_media_files() function, which allows a remote attacker to read arbitrary files on the server filesystem. This issue is fixed in version 3.4.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-22"],"references":["https://github.com/zauberzeug/nicegui/commit/a1b89e2a24e1911a40389ace2153a37f4eea92a9","https://github.com/zauberzeug/nicegui/security/advisories/GHSA-hxp3-63hc-5366","https://github.com/zauberzeug/nicegui/security/advisories/GHSA-hxp3-63hc-5366"],"products":["zauberzeug:nicegui"],"source":"nvd","synced_at":"2026-10-19T22:16:40.427100871+00:00"},"epss":{"cve":"CVE-2025-66645","score":0.0112,"percentile":0.65948,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-hxp3-63hc-5366","url":"https://osv.dev/vulnerability/GHSA-hxp3-63hc-5366","summary":"NiceGUI has a path traversal in app.add_media_files() allows arbitrary file read","modified":"2026-07-07T17:57:24.907008336Z","packages":[{"ecosystem":"PyPI","name":"nicegui","purl":"pkg:pypi/nicegui","ranges":["<3.4.0"],"fixed":["3.4.0"]}]},{"id":"PYSEC-2026-1700","url":"https://osv.dev/vulnerability/PYSEC-2026-1700","summary":"NiceGUI has a path traversal in app.add_media_files() allows arbitrary file read","modified":"2026-07-07T17:46:58.258815626Z","packages":[{"ecosystem":"PyPI","name":"nicegui","purl":"pkg:pypi/nicegui","ranges":["<3.4.0"],"fixed":["3.4.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}