{"id":"CVE-2026-129164","kind":"vulnerability","aliases":["CVE-2026-129164"],"related":[],"title":"free-fs: share codes enforced only client-side, letting anyone download files","description":"Dromara free-fs 2.0.1 through 2.3.1 contains an authorization bypass vulnerability that allows attackers to access code-protected shares because share codes are enforced only client-side. Attackers knowing a share ID can call the share items and download endpoints to list and download files without the code, even on preview-only shares.","summary":"Dromara free-fs versions 2.0.1 through 2.3.1 check share codes only in the browser, so the server does not require them. An attacker who knows a share ID can list and download the files in a code-protected share, including preview-only shares.","severity":"high","cvss":8.2,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["file-sharing","free-fs","package","self-hosted"],"not_affected_if":["no-share-codes","version-outside-range"],"how_to_check":"- Check the free-fs version in the deployed project's dependency file or build output, looking for `2.0.1` through `2.3.1`\n- Review whether any file shares rely on share codes for access control","fix":"- free-fs: unknown (the sources do not name a fixed version)","status":"open","published_at":"2026-11-13T18:17:41+00:00","first_seen_at":"2026-11-13T18:49:31+00:00","triaged_at":"2026-11-13T18:51:30+00:00","updated_at":"2026-11-13T18:51:30+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-13T18:51:30Z","model":"claude-haiku-5-5","output":{"fix":"- free-fs: unknown (the sources do not name a fixed version)","reach":"internet","title":"free-fs: share codes enforced only client-side, letting anyone download files","impact":"medium","summary":"Dromara free-fs versions 2.0.1 through 2.3.1 check share codes only in the browser, so the server does not require them. An attacker who knows a share ID can list and download the files in a code-protected share, including preview-only shares.","audience":"businesses","category":"package","nicknames":[],"who_cares":["free-fs","self-hosted","file-sharing"],"confidence":0.6,"fix_status":"unknown","needs_auth":"no","worst_case":"Attacker downloads files from code-protected shares without the code","analyst_note":"Confirm the fixed version and the exact share endpoints at nvd.nist.gov and the vendor's repository; the sources given do not name a fix.","how_to_check":"- Check the free-fs version in the deployed project's dependency file or build output, looking for `2.0.1` through `2.3.1`\n- Review whether any file shares rely on share codes for access control","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-share-codes","version-outside-range"],"who_is_affected":"Teams that run free-fs 2.0.1 through 2.3.1 and use share codes to protect file shares are exposed, since the server does not enforce the code. Deployments that do not use share codes, or that run a version outside this range, are not affected by this flaw.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"yes","severity_if_unknown":"unknown"},"cost_usd":0.000732,"input_tokens":4586,"output_tokens":546,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-129164':17A,20A '-2026':16A,19A '2.0.1':36B,81C '2.3.1':38B,83C 'access':93C 'allow':90C 'anyon':12A 'attack':54B,91C,107C 'author':86C 'browser':45B 'bypass':87C 'call':113C 'check':39B 'client':9A,105C 'client-sid':8A,104C 'code':5A,41B,69B,95C,100C,127C 'code-protect':68B,94C 'contain':84C 'cve':15A,18A 'download':13A,63B,118C,123C 'dromara':31B,77C 'endpoint':119C 'enforc':6A,102C 'even':128C 'file':14A,22B,65B,124C 'file-shar':21B 'free':2A,25B,33B,79C 'free-f':1A,24B,32B,78C 'fs':3A,26B,34B,80C 'host':30B 'id':59B,111C 'includ':72B 'item':116C 'know':56B,108C 'let':11A 'list':61B,121C 'packag':27B 'preview':74B,131C 'preview-on':73B,130C 'protect':70B,96C 'requir':51B 'self':29B 'self-host':28B 'server':48B 'share':4A,23B,40B,58B,71B,76B,97C,99C,110C,115C,133C 'side':10A,106C 'version':35B 'vulner':88C 'without':125C","nicknames":[],"mitigations":[],"who_affected":"Teams that run free-fs 2.0.1 through 2.3.1 and use share codes to protect file shares are exposed, since the server does not enforce the code. Deployments that do not use share codes, or that run a version outside this range, are not affected by this flaw.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["filesharing","freefs","high","package","selfhosted"],"campaign_type":null,"search_a":"'-129164':17A,20A '-2026':16A,19A 'anyon':12A 'client':9A 'client-sid':8A 'code':5A 'cve':15A,18A 'download':13A 'enforc':6A 'file':14A 'free':2A 'free-f':1A 'fs':3A 'let':11A 'share':4A 'side':10A","search_b":"'2.0.1':36B '2.3.1':38B 'attack':54B 'browser':45B 'check':39B 'code':41B,69B 'code-protect':68B 'download':63B 'dromara':31B 'file':22B,65B 'file-shar':21B 'free':25B,33B 'free-f':24B,32B 'fs':26B,34B 'host':30B 'id':59B 'includ':72B 'know':56B 'list':61B 'packag':27B 'preview':74B 'preview-on':73B 'protect':70B 'requir':51B 'self':29B 'self-host':28B 'server':48B 'share':23B,40B,58B,71B,76B 'version':35B","search_c":"'2.0.1':81C '2.3.1':83C 'access':93C 'allow':90C 'attack':91C,107C 'author':86C 'bypass':87C 'call':113C 'client':105C 'client-sid':104C 'code':95C,100C,127C 'code-protect':94C 'contain':84C 'download':118C,123C 'dromara':77C 'endpoint':119C 'enforc':102C 'even':128C 'file':124C 'free':79C 'free-f':78C 'fs':80C 'id':111C 'item':116C 'know':108C 'list':121C 'preview':131C 'preview-on':130C 'protect':96C 'share':97C,99C,110C,115C,133C 'side':106C 'vulner':88C 'without':125C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-13T18:17:41+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/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-2026-129164","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-129164","severity":null,"published_at":"2026-11-13T18:17:41+00:00","modified_at":"2026-11-13T18:17:41+00:00","first_seen_at":"2026-11-13T18:49:31+00:00","fetched_at":"2026-11-13T18:49:31+00:00","note":null}],"documents":[{"id":148621,"url":"https://www.vulncheck.com/advisories/dromara-free-fs-2.0.1-through-2.3.1-share-code-and-permission-scope-bypass","title":"Third-party advisory: www.vulncheck.com","kind":"advisory","source":"nvd","publisher":"research","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Third-party advisory: www.vulncheck.com"}],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}