{"id":"CVE-2026-123991","kind":"vulnerability","aliases":["CVE-2026-123991"],"related":[],"title":"DataEase: authentication bypass lets remote users upload arbitrary files","description":"A vulnerability was detected in DataEase up to 2.10.27. Affected by this vulnerability is the function WhitelistUtils.endsWithAny of the file WhitelistUtils.java of the component Authentication Filter. Performing a manipulation of the argument File results in unrestricted upload. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading to version 2.10.28 addresses this issue. It is advisable to upgrade the affected component. The vendor confirms: \"This issue has been addressed by enforcing authentication on the standalone static-resource upload endpoint independently of the URI suffix whitelist.\"","summary":"DataEase up to 2.10.27 has a flaw in its authentication filter: a file-type whitelist check lets a crafted upload request skip authentication. An attacker can upload arbitrary files to the server remotely, and a public exploit exists.","severity":"high","cvss":7.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["dataease","file-upload","package","self-hosted"],"not_affected_if":["version-2.10.28-or-later"],"how_to_check":"- Check the installed DataEase version against `2.10.27` and older.\n- Look for unexpected uploaded files in the DataEase upload or static-resource directories.","fix":"- DataEase: upgrade to `2.10.28`.","status":"open","published_at":"2026-11-07T17:16:34+00:00","first_seen_at":"2026-11-07T17:18:13+00:00","triaged_at":"2026-11-07T17:20:18+00:00","updated_at":"2026-11-07T17:20:18+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-11-07T17:20:18Z","model":"claude-haiku-5-5","output":{"fix":"- DataEase: upgrade to `2.10.28`.","reach":"internet","title":"DataEase: authentication bypass lets remote users upload arbitrary files","impact":"high","summary":"DataEase up to 2.10.27 has a flaw in its authentication filter: a file-type whitelist check lets a crafted upload request skip authentication. An attacker can upload arbitrary files to the server remotely, and a public exploit exists.","audience":"businesses","category":"package","nicknames":[],"who_cares":["dataease","self-hosted","file-upload"],"confidence":0.7,"fix_status":"available","needs_auth":"no","worst_case":"Attacker uploads arbitrary files, possibly leading to code execution on the server.","analyst_note":"Confirm whether unauthenticated upload can lead to code execution (uploaded file served and executed) and check the vendor release notes for the 2.10.28 fix details.","how_to_check":"- Check the installed DataEase version against `2.10.27` and older.\n- Look for unexpected uploaded files in the DataEase upload or static-resource directories.","plain_action":"","needs_analyst":true,"not_affected_if":["version-2.10.28-or-later"],"who_is_affected":"DataEase deployments up to and including 2.10.27 that accept network traffic. The flaw is in the authentication filter's suffix whitelist on the standalone static-resource upload endpoint, so any internet-reachable instance is exposed. Instances already on 2.10.28 or later are not affected.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000713,"input_tokens":4335,"output_tokens":558,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-123991':12A,15A '-2026':11A,14A '2.10.27':27B,71C '2.10.28':120C 'address':121C,139C 'advis':126C 'affect':72C,130C 'arbitrari':8A,52B 'argument':94C 'attack':49B,106C 'authent':2A,33B,47B,87C,142C 'bypass':3A 'check':40B 'compon':86C,131C 'confirm':134C 'craft':43B 'cve':10A,13A 'dataeas':1A,16B,24B,68C 'detect':66C 'endpoint':150C 'enforc':141C 'exist':62B 'exploit':61B,109C 'file':9A,18B,37B,53B,82C,95C 'file-typ':36B 'file-upload':17B 'filter':34B,88C 'flaw':30B 'function':78C 'host':23B 'independ':151C 'initi':104C 'issu':123C,136C 'let':4A,41B 'manipul':91C 'may':114C 'packag':20B 'perform':89C 'possibl':102C 'public':60B,112C 'remot':5A,57B,107C 'request':45B 'resourc':148C 'result':96C 'self':22B 'self-host':21B 'server':56B 'skip':46B 'standalon':145C 'static':147C 'static-resourc':146C 'suffix':155C 'type':38B 'unrestrict':98C 'upgrad':117C,128C 'upload':7A,19B,44B,51B,99C,149C 'uri':154C 'use':116C 'user':6A 'vendor':133C 'version':119C 'vulner':64C,75C 'whitelist':39B,156C 'whitelistutils.endswithany':79C 'whitelistutils.java':83C","nicknames":[],"mitigations":[],"who_affected":"DataEase deployments up to and including 2.10.27 that accept network traffic. The flaw is in the authentication filter's suffix whitelist on the standalone static-resource upload endpoint, so any internet-reachable instance is exposed. Instances already on 2.10.28 or later are not affected.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["dataease","fileupload","high","package","selfhosted"],"campaign_type":null,"search_a":"'-123991':12A,15A '-2026':11A,14A 'arbitrari':8A 'authent':2A 'bypass':3A 'cve':10A,13A 'dataeas':1A 'file':9A 'let':4A 'remot':5A 'upload':7A 'user':6A","search_b":"'2.10.27':27B 'arbitrari':52B 'attack':49B 'authent':33B,47B 'check':40B 'craft':43B 'dataeas':16B,24B 'exist':62B 'exploit':61B 'file':18B,37B,53B 'file-typ':36B 'file-upload':17B 'filter':34B 'flaw':30B 'host':23B 'let':41B 'packag':20B 'public':60B 'remot':57B 'request':45B 'self':22B 'self-host':21B 'server':56B 'skip':46B 'type':38B 'upload':19B,44B,51B 'whitelist':39B","search_c":"'2.10.27':71C '2.10.28':120C 'address':121C,139C 'advis':126C 'affect':72C,130C 'argument':94C 'attack':106C 'authent':87C,142C 'compon':86C,131C 'confirm':134C 'dataeas':68C 'detect':66C 'endpoint':150C 'enforc':141C 'exploit':109C 'file':82C,95C 'filter':88C 'function':78C 'independ':151C 'initi':104C 'issu':123C,136C 'manipul':91C 'may':114C 'perform':89C 'possibl':102C 'public':112C 'remot':107C 'resourc':148C 'result':96C 'standalon':145C 'static':147C 'static-resourc':146C 'suffix':155C 'unrestrict':98C 'upgrad':117C,128C 'upload':99C,149C 'uri':154C 'use':116C 'vendor':133C 'version':119C 'vulner':64C,75C 'whitelist':156C 'whitelistutils.endswithany':79C 'whitelistutils.java':83C","first_public_at":"2026-11-07T17:16:34+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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":"cna@vuldb.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-123991","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123991","severity":null,"published_at":"2026-11-07T17:16:34+00:00","modified_at":"2026-11-07T17:16:34+00:00","first_seen_at":"2026-11-07T17:18:13+00:00","fetched_at":"2026-11-07T17:18:13+00:00","note":null}],"documents":[{"id":96845,"url":"https://github.com/dataease/dataease/releases/tag/v2.10.28","title":"Release notes: github.com","kind":"release","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Release notes: github.com"}],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}