{"cve":"CVE-2026-84320","nvd":{"published":"2026-10-12T21:17:22.663","modified":"2026-10-13T21:19:11.537","status":"Deferred","description":"Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.3, Nginx UI validates an automatic backup's storage_path, but AutoBackup.GetName returns a user-controlled name without rejecting path separators or parent-directory components, and downstream filename formatting embeds that result in the final archive filename. An authenticated user who can create or modify an automatic backup can cause filepath.Join to resolve the generated archive path outside the validated storage directory, allowing backup archives to be written with the Nginx UI process privileges. For encrypted configuration backups, the adjacent encryption key file can also be written outside the validated directory. This issue is fixed in version 2.4.3.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","score":6.3},"cwes":["CWE-22"],"references":["https://github.com/0xJacky/nginx-ui/commit/f92218e01054491fc1e6684dc6f7facaf8ab41eb","https://github.com/0xJacky/nginx-ui/releases/tag/v2.4.3","https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-jrq7-xrjx-pcfw"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:58:52.678897993+00:00"},"epss":{"cve":"CVE-2026-84320","score":0.00167,"percentile":0.05935,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-jrq7-xrjx-pcfw","url":"https://osv.dev/vulnerability/GHSA-jrq7-xrjx-pcfw","summary":"Nginx UI: Auto backup name allows path traversal outside validated storage path","modified":"2026-10-19T21:40:47.037315547Z","packages":[{"ecosystem":"Go","name":"github.com/0xJacky/Nginx-UI","purl":"pkg:golang/github.com/0xJacky/Nginx-UI","ranges":["<1.9.10-0.20260715121709-f92218e01054"],"fixed":["1.9.10-0.20260715121709-f92218e01054"]}]},{"id":"GO-2026-6788","url":"https://osv.dev/vulnerability/GO-2026-6788","summary":"Nginx UI: Auto backup name allows path traversal outside validated storage path in github.com/0xJacky/Nginx-UI","modified":"2026-10-19T21:31:50.619731740Z","packages":[{"ecosystem":"Go","name":"github.com/0xJacky/Nginx-UI","purl":"pkg:golang/github.com/0xJacky/Nginx-UI","ranges":["<1.9.10-0.20260715121709-f92218e01054"],"fixed":["1.9.10-0.20260715121709-f92218e01054"]}]}],"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."]}