{"cve":"CVE-2026-3089","nvd":{"published":"2026-03-09T14:16:10.143","modified":"2026-06-17T10:43:01.840","status":"Analyzed","description":"Actual Sync Server allows authenticated users to upload files through POST /sync/upload-user-file. In versions prior to 26.3.0, improper validation of the user-controlled x-actual-file-id header means that traversal segments (../) can escape the intended directory and write files outside userFiles.This issue affects prior versions of Actual Sync Server 26.3.0.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":5.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","score":6.5},"cwes":["CWE-22"],"references":["https://fluidattacks.com/advisories/fugue","https://github.com/actualbudget/actual","https://github.com/actualbudget/actual/pull/7067","https://fluidattacks.com/advisories/fugue"],"products":["actualbudget:actual"],"source":"nvd","synced_at":"2026-10-19T22:25:53.701907451+00:00"},"epss":{"cve":"CVE-2026-3089","score":0.00392,"percentile":0.33388,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-27vg-33gh-4hwg","url":"https://osv.dev/vulnerability/GHSA-27vg-33gh-4hwg","summary":"Actual Sync Server has an Authenticated Path Traversal","modified":"2026-03-10T01:26:18.862998Z","packages":[{"ecosystem":"npm","name":"@actual-app/sync-server","purl":"pkg:npm/%40actual-app/sync-server","ranges":["<26.3.0"],"fixed":["26.3.0"]}]}],"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."]}