{"id":"CVE-2026-112343","kind":"vulnerability","aliases":["CVE-2026-112343"],"related":[],"title":"Syncplify Server: SFTP users bypass folder permissions via case and 8.3 names","description":"Syncplify Server! before 8.8.0 contains an access control bypass vulnerability that allows authenticated SFTP users to evade per-path permission overrides by exploiting case-insensitive filesystem path resolution and 8.3 short names. Attackers can address a protected directory using alternate capitalization or its 8.3 short name to perform file uploads and downloads that the configured override is intended to deny, resulting in unauthorized file access.","summary":"Syncplify Server before 8.8.0 lets an authenticated SFTP user evade per-path permission overrides by writing a protected directory name in different capitalization or as its 8.3 short name. The bypass allows uploads and downloads that the configured override is meant to block.","severity":"high","cvss":8.6,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["other","self-hosted","sftp","syncplify-server","windows"],"not_affected_if":["no-path-overrides","no-sftp-users","version-8.8.0-or-later"],"how_to_check":"- Check the installed Syncplify Server version in its admin console or install directory; the sources do not give a command.\n- Review per-path permission overrides for protected folders and confirm whether any SFTP accounts can reach them.","fix":"- Upgrade Syncplify Server to `8.8.0` or later.\n- Unknown whether a configuration workaround exists; the sources do not say.","status":"open","published_at":"2026-10-26T16:17:13+00:00","first_seen_at":"2026-10-26T16:31:01+00:00","triaged_at":"2026-10-26T16:32:43+00:00","updated_at":"2026-10-26T16:32:43+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-10-26T16:32:43Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade Syncplify Server to `8.8.0` or later.\n- Unknown whether a configuration workaround exists; the sources do not say.","reach":"network","title":"Syncplify Server: SFTP users bypass folder permissions via case and 8.3 names","impact":"medium","summary":"Syncplify Server before 8.8.0 lets an authenticated SFTP user evade per-path permission overrides by writing a protected directory name in different capitalization or as its 8.3 short name. The bypass allows uploads and downloads that the configured override is meant to block.","category":"other","nicknames":[],"who_cares":["syncplify-server","sftp","self-hosted","windows"],"confidence":0.6,"needs_auth":"yes","worst_case":"Authenticated SFTP user reads or writes protected folders they should not reach.","analyst_note":"Confirm the fixed version and any workaround from the NVD entry or vendor advisory; the sources give no product detail beyond the description.","how_to_check":"- Check the installed Syncplify Server version in its admin console or install directory; the sources do not give a command.\n- Review per-path permission overrides for protected folders and confirm whether any SFTP accounts can reach them.","needs_analyst":true,"not_affected_if":["version-8.8.0-or-later","no-sftp-users","no-path-overrides"],"who_is_affected":"Teams running Syncplify Server before `8.8.0` that use SFTP access with per-path permission overrides to protect folders. Exposure requires valid SFTP credentials, so deployments without per-path overrides or without SFTP users are less exposed. Deployments on `8.8.0` or later are not affected.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"unknown"},"cost_usd":0.000642,"input_tokens":3364,"output_tokens":611,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-112343':15A,18A '-2026':14A,17A '8.3':11A,55B,103C,117C '8.8.0':31B,75C 'access':78C,138C 'address':108C 'allow':60B,83C 'altern':113C 'attack':106C 'authent':34B,84C 'block':71B 'bypass':5A,59B,80C 'capit':51B,114C 'case':9A,97C 'case-insensit':96C 'configur':66B,128C 'contain':76C 'control':79C 'cve':13A,16A 'deni':133C 'differ':50B 'directori':47B,111C 'download':63B,125C 'evad':37B,88C 'exploit':95C 'file':122C,137C 'filesystem':99C 'folder':6A 'host':22B 'insensit':98C 'intend':131C 'let':32B 'meant':69B 'name':12A,48B,57B,105C,119C 'overrid':42B,67B,93C,129C 'path':40B,91C,100C 'per':39B,90C 'per-path':38B,89C 'perform':121C 'permiss':7A,41B,92C 'protect':46B,110C 'resolut':101C 'result':134C 'self':21B 'self-host':20B 'server':2A,26B,29B,73C 'sftp':3A,23B,35B,85C 'short':56B,104C,118C 'syncplifi':1A,25B,28B,72C 'syncplify-serv':24B 'unauthor':136C 'upload':61B,123C 'use':112C 'user':4A,36B,86C 'via':8A 'vulner':81C 'window':27B 'write':44B","nicknames":[],"mitigations":[],"who_affected":"Teams running Syncplify Server before `8.8.0` that use SFTP access with per-path permission overrides to protect folders. Exposure requires valid SFTP credentials, so deployments without per-path overrides or without SFTP users are less exposed. Deployments on `8.8.0` or later are not affected.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-26T16:17:13+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-112343","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112343","severity":null,"published_at":"2026-10-26T16:17:13+00:00","modified_at":"2026-10-26T16:17:13+00:00","first_seen_at":"2026-10-26T16:31:01+00:00","fetched_at":"2026-10-26T16:31:01+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}