{"id":"CVE-2026-16020","kind":"vulnerability","aliases":["CVE-2026-16020"],"related":[],"title":"DefterAsist Financial Advisor Platform: stored XSS lets attackers run scripts","description":"Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fazile BACAK DefterAsist Financial Advisor Platform allows Stored XSS.\n\nThis issue affects DefterAsist Financial Advisor Platform: through 2026-10-27.","summary":"DefterAsist Financial Advisor Platform by Fazile BACAK has a stored cross-site scripting flaw, so input saved by one user is rendered unescaped in pages. An attacker can run scripts in other users' browsers to read or act on their sessions.","severity":"medium","cvss":5.4,"epss":0.00133,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["financial-advisor-platform","other","web-app"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-10-28T09:17:06+00:00","first_seen_at":"2026-10-28T09:32:03+00:00","triaged_at":"2026-10-28T09:34:07+00:00","updated_at":"2026-10-28T14:59:12+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-10-28T09:34:07Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"internet","title":"DefterAsist Financial Advisor Platform: stored XSS lets attackers run scripts","impact":"medium","summary":"DefterAsist Financial Advisor Platform by Fazile BACAK has a stored cross-site scripting flaw, so input saved by one user is rendered unescaped in pages. An attacker can run scripts in other users' browsers to read or act on their sessions.","category":"other","nicknames":[],"who_cares":["web-app","financial-advisor-platform"],"confidence":0.5,"needs_auth":"unknown","worst_case":"scripts run in victims' browsers and steal their sessions","analyst_note":"Check the NVD entry and vendor or project pages for the affected versions, the fixed release and whether the injection needs login; the sources give only the description and CVSS 5.4.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000518,"input_tokens":3314,"output_tokens":374,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-10':99C '-16020':13A,16A '-2026':12A,15A '-27':100C '2026':98C 'act':63B 'advisor':3A,19B,27B,85C,95C 'affect':92C 'allow':87C 'app':24B 'attack':8A,52B 'bacak':31B,82C 'browser':59B 'cross':36B,76C 'cross-sit':35B,75C 'cve':11A,14A 'defterasist':1A,25B,83C,93C 'fazil':30B,81C 'financi':2A,18B,26B,84C,94C 'financial-advisor-platform':17B 'flaw':39B 'generat':74C 'improp':67C 'input':41B,70C 'issu':91C 'let':7A 'neutral':68C 'one':44B 'page':50B,73C 'platform':4A,20B,28B,86C,96C 'read':61B 'render':47B 'run':9A,54B 'save':42B 'script':10A,38B,55B,78C 'session':66B 'site':37B,77C 'store':5A,34B,88C 'unescap':48B 'user':45B,58B 'vulner':79C 'web':23B,72C 'web-app':22B 'xss':6A,89C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":null,"audience":null,"plain_action":null,"first_public_at":"2026-10-28T09:17:06+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","cvss_by":"iletisim@usom.gov.tr","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-16020","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16020","severity":null,"published_at":"2026-10-28T09:17:06+00:00","modified_at":"2026-10-28T09:17:06+00:00","first_seen_at":"2026-10-28T09:32:03+00:00","fetched_at":"2026-10-28T09:32:03+00:00","note":null},{"source":"epss","external_id":"CVE-2026-16020","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-16020","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-28T14:59:12+00:00","fetched_at":"2026-10-28T14:59:12+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"}