{"id":"CVE-2017-1000420","aliases":["DEBIAN-CVE-2017-1000420","EUVD-2022-1945","GHSA-28xp-g7f6-7mhf","UBUNTU-CVE-2017-1000420"],"status":"published","title":"Syncthing vulnerable to symlink traversal and arbitrary file overwrite","description":"Syncthing version 0.14.33 and older is vulnerable to symlink traversal resulting in arbitrary file overwrite","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01509,"percentile":0.74609,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-59"],"published":"2018-01-02T19:00:00Z","modified":"2026-10-20T10:48:01Z","fixes":[{"ecosystem":"Debian:12","package":"syncthing","fixed_in":["0.14.36+ds1-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"syncthing","fixed_in":["0.14.36+ds1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"syncthing","fixed_in":["0.14.36+ds1-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/syncthing/syncthing","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.14.33"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"syncthing","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.14.36+ds1-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"syncthing","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.14.36+ds1-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"syncthing","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.14.36+ds1-1"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/syncthing/syncthing","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.14.33"}]}]}],"products":[{"vendor":"syncthing","product":"syncthing"}],"references":[{"url":"https://github.com/syncthing/syncthing/issues/4286","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Patch","Third Party Advisory","fix","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-1000420","tags":["advisory"]},{"url":"https://github.com/syncthing/syncthing/commit/f1f21bf22020d9b881478c2e942ba6943c8da2f3","tags":["web"]},{"url":"https://github.com/advisories/GHSA-28xp-g7f6-7mhf"},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-1000420","tags":["advisory"]},{"url":"https://github.com/syncthing/syncthing","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2017-1000420","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-1000420","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-1000420","description":"Syncthing version 0.14.33 and older is vulnerable to symlink traversal resulting in arbitrary file overwrite","status":"published","published":"2018-01-02T19:00:00Z","modified":"2024-09-16T16:53:22.748Z","updated_at":"2026-11-02T14:33:20.843976Z"}],"euvd":[{"id":"EUVD-2022-1945","description":"Syncthing version 0.14.33 and older is vulnerable to symlink traversal resulting in arbitrary file overwrite","status":"published","published":"2018-01-02T19:00:00Z","modified":"2024-09-16T16:53:22Z","updated_at":"2026-11-03T00:55:47.18954Z"}],"ghsa":[{"id":"GHSA-28xp-g7f6-7mhf","title":"Syncthing vulnerable to symlink traversal and arbitrary file overwrite","description":"Syncthing version 0.14.33 and older erronously versions symlinks when they are deleted. If a directory is then created with the same name, a file created in that directory, and the file deleted, it is moved into the symlink target. This can lead to symlink traversal resulting in arbitrary file overwrite.","status":"published","published":"2022-05-14T03:49:59Z","modified":"2023-10-10T16:33:32Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T14:37:08.847568Z"}],"nvd":[{"id":"CVE-2017-1000420","description":"Syncthing version 0.14.33 and older is vulnerable to symlink traversal resulting in arbitrary file overwrite","status":"published","published":"2018-01-02T19:29:00.257Z","modified":"2026-06-17T00:59:08.76Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T14:04:11.215487Z"}],"osv":[{"id":"CVE-2017-1000420","description":"Syncthing version 0.14.33 and older is vulnerable to symlink traversal resulting in arbitrary file overwrite","status":"published","published":"2018-01-02T19:29:00.257Z","modified":"2026-10-20T10:48:01.702301597Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:03.851821Z"},{"id":"DEBIAN-CVE-2017-1000420","description":"Syncthing version 0.14.33 and older is vulnerable to symlink traversal resulting in arbitrary file overwrite","status":"published","published":"2018-01-02T19:29:00.257Z","modified":"2026-09-01T20:03:41.476299749Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:28.207321Z"},{"id":"GHSA-28xp-g7f6-7mhf","title":"Syncthing vulnerable to symlink traversal and arbitrary file overwrite","description":"Syncthing version 0.14.33 and older erronously versions symlinks when they are deleted. If a directory is then created with the same name, a file created in that directory, and the file deleted, it is moved into the symlink target. This can lead to symlink traversal resulting in arbitrary file overwrite.","status":"published","published":"2022-05-14T03:49:59Z","modified":"2023-11-08T03:58:46.184428Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T15:46:33.956911Z"},{"id":"UBUNTU-CVE-2017-1000420","description":"Syncthing version 0.14.33 and older is vulnerable to symlink traversal resulting in arbitrary file overwrite","status":"withdrawn","published":"2018-01-02T19:29:00Z","modified":"2025-07-17T16:53:42Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:54:13.729565Z"}]}}