{"id":"CVE-2025-5769","kind":"vulnerability","aliases":["CVE-2025-5769"],"related":[],"title":"Unknown product's login page reflects input, enabling browser script injection","description":"The authentication endpoint does not properly encode user-supplied input before rendering it within the web page. This lack of output encoding allows an attacker to inject malicious JavaScript payloads into the authentication flow, which are then executed by the victim's browser.\n\nBy exploiting this vulnerability, an attacker can redirect the user's browser to a malicious website, modify the content of the web page displayed to the user, or exfiltrate information from the browser. However, due to the implementation of the httpOnly flag on session-related sensitive cookies, session hijacking and similar attacks are not possible.","summary":"The authentication endpoint renders user-supplied input without encoding, so an attacker can inject JavaScript that runs in a victim's browser. The attacker can redirect users, alter the displayed page, or read browser data, but session cookies are httpOnly and cannot be stolen this way.","severity":"medium","cvss":6.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["other"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-03T07:17:41+00:00","first_seen_at":"2026-11-03T07:19:16+00:00","triaged_at":"2026-11-03T07:21:10+00:00","updated_at":"2026-11-03T07:21:10+00:00","category":"other","confidence":0.4,"triage":{"at":"2026-11-03T07:21:10Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"internet","title":"Unknown product's login page reflects input, enabling browser script injection","impact":"medium","summary":"The authentication endpoint renders user-supplied input without encoding, so an attacker can inject JavaScript that runs in a victim's browser. The attacker can redirect users, alter the displayed page, or read browser data, but session cookies are httpOnly and cannot be stolen this way.","audience":"businesses","category":"other","nicknames":[],"who_cares":[],"confidence":0.4,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Injected script redirects users and alters pages shown to them","analyst_note":"Identify the affected product and versions from the NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2025-5769, then find the vendor advisory and fixed version.","how_to_check":"unknown","plain_action":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown. The sources name no product, version or configuration, so the affected system cannot be identified from them.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000627,"input_tokens":4202,"output_tokens":414,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2025':13A,16A '-5769':14A,17A 'allow':88C 'alter':46B 'attack':30B,42B,90C,114C,161C 'authent':19B,66C,98C 'browser':9A,40B,52B,108C,120C,141C 'cannot':60B 'content':127C 'cooki':56B,156C 'cve':12A,15A 'data':53B 'display':48B,132C 'due':143C 'enabl':8A 'encod':27B,71C,87C 'endpoint':20B,67C 'execut':103C 'exfiltr':137C 'exploit':110C 'flag':150C 'flow':99C 'hijack':158C 'howev':142C 'httpon':58B,149C 'implement':146C 'inform':138C 'inject':11A,32B,92C 'input':7A,25B,75C 'javascript':33B,94C 'lack':84C 'login':4A 'malici':93C,123C 'modifi':125C 'output':86C 'page':5A,49B,82C,131C 'payload':95C 'possibl':164C 'product':2A 'proper':70C 'read':51B 'redirect':44B,116C 'reflect':6A 'relat':154C 'render':21B,77C 'run':35B 'script':10A 'sensit':155C 'session':55B,153C,157C 'session-rel':152C 'similar':160C 'stolen':62B 'suppli':24B,74C 'unknown':1A 'user':23B,45B,73C,118C,135C 'user-suppli':22B,72C 'victim':38B,106C 'vulner':112C 'way':64B 'web':81C,130C 'websit':124C 'within':79C 'without':26B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["medium","other"],"first_public_at":"2026-11-03T07:17:41+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cvss_by":"ed10eef1-636d-4fbe-9993-6890dfa878f8","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2025-5769","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-5769","severity":null,"published_at":"2026-11-03T07:17:41+00:00","modified_at":"2026-11-03T07:17:41+00:00","first_seen_at":"2026-11-03T07:19:16+00:00","fetched_at":"2026-11-03T07:19:16+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"}