{"id":"CVE-2026-91486","kind":"vulnerability","aliases":["CVE-2026-91486"],"related":[],"title":"Oracle PeopleSoft FIN General Ledger Brazil: low-privilege user can alter data","description":"Vulnerability in the PeopleSoft Enterprise FIN General Ledger Brazil product of Oracle PeopleSoft (component: General Ledger).   The supported version that is affected is 9.1. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where PeopleSoft Enterprise FIN General Ledger Brazil executes to compromise PeopleSoft Enterprise FIN General Ledger Brazil.  Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of PeopleSoft Enterprise FIN General Ledger Brazil accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of PeopleSoft Enterprise FIN General Ledger Brazil. CVSS 3.1 Base Score 4.4 (Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L).","summary":"A flaw in the General Ledger component of Oracle PeopleSoft Enterprise FIN General Ledger Brazil 9.1 lets a low-privileged user who can log on to the underlying infrastructure modify or delete some accessible data. It can also cause a partial denial of service.","severity":"medium","cvss":4.4,"epss":0.00095,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["erp","finance-systems","oracle","other","peoplesoft"],"not_affected_if":["other-peoplesoft-modules"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-10-20T22:20:53+00:00","first_seen_at":"2026-10-23T21:57:27+00:00","triaged_at":"2026-10-25T04:35:48+00:00","updated_at":"2026-10-25T12:38:51+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-10-25T04:35:48Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Oracle PeopleSoft FIN General Ledger Brazil: low-privilege user can alter data","impact":"medium","summary":"A flaw in the General Ledger component of Oracle PeopleSoft Enterprise FIN General Ledger Brazil 9.1 lets a low-privileged user who can log on to the underlying infrastructure modify or delete some accessible data. It can also cause a partial denial of service.","category":"other","nicknames":[],"who_cares":["peoplesoft","oracle","erp","finance-systems"],"confidence":0.7,"needs_auth":"yes","worst_case":"low-privileged user alters or deletes some ledger data and degrades service","analyst_note":"Check Oracle's Critical Patch Update advisory for the patch level that fixes CVE-2026-91486 in PeopleSoft FIN General Ledger Brazil 9.1.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["other-peoplesoft-modules"],"who_is_affected":"Organizations running Oracle PeopleSoft Enterprise FIN General Ledger Brazil 9.1, where users have logon access to the infrastructure hosting the application. The sources do not say whether remote or network-only access is enough to exploit it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000602,"input_tokens":3584,"output_tokens":488,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':15A,18A '-91486':16A,19A '/av':181C '3.1':169C,180C '4.4':172C '9.1':42B,95C 'abil':151C 'access':61B,137C,147C 'affect':93C 'allow':99C 'also':65B 'alter':12A 'attack':102C,125C 'avail':175C 'base':170C 'brazil':6A,41B,80C,114C,123C,146C,167C 'caus':66B,153C 'compon':33B,85C 'compromis':117C 'cve':14A,17A 'cvss':168C,177C,179C 'data':13A,62B,148C 'delet':59B,136C 'denial':69B,156C 'dos':160C 'easili':96C 'enterpris':37B,76C,110C,119C,142C,163C 'erp':20B 'execut':115C 'exploit':97C 'fin':3A,38B,77C,111C,120C,143C,164C 'financ':22B 'finance-system':21B 'flaw':28B 'general':4A,31B,39B,78C,86C,112C,121C,144C,165C 'impact':176C 'infrastructur':56B,107C 'insert':134C 'integr':173C 'l':189C 'l/a':188C 'l/ac':182C 'l/pr':183C 'l/ui':184C 'ledger':5A,32B,40B,79C,87C,113C,122C,145C,166C 'let':43B 'log':51B 'logon':104C 'low':8A,46B,100C 'low-privileg':7A,45B 'modifi':57B 'n/i':187C 'n/s':185C 'oracl':1A,24B,35B,83C 'partial':68B,155C,159C 'peoplesoft':2A,26B,36B,75C,84C,109C,118C,141C,162C 'privileg':9A,47B,101C 'product':81C 'result':130C 'score':171C 'servic':71B,158C 'success':124C 'support':89C 'system':23B 'u/c':186C 'unauthor':132C,150C 'under':55B 'updat':133C 'user':10A,48B 'vector':178C 'version':90C 'vulner':72C,98C,128C","nicknames":[],"mitigations":[],"who_affected":"Organizations running Oracle PeopleSoft Enterprise FIN General Ledger Brazil 9.1, where users have logon access to the infrastructure hosting the application. The sources do not say whether remote or network-only access is enough to exploit it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:53+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91486","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91486","severity":null,"published_at":"2026-10-20T22:20:53+00:00","modified_at":"2026-10-21T18:44:55+00:00","first_seen_at":"2026-10-23T21:57:27+00:00","fetched_at":"2026-10-23T22:29:00+00:00","note":null},{"source":"epss","external_id":"CVE-2026-91486","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-91486","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-25T12:38:51+00:00","fetched_at":"2026-10-25T12:38:51+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"}