{"id":"CVE-2026-91475","kind":"vulnerability","aliases":["CVE-2026-91475"],"related":[],"title":"Oracle Outside In Clean Content SDK: local low-privilege user can modify data","description":"Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Clean Content SDK).   The supported version that is affected is 8.5.8. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Outside In Technology executes to compromise Oracle Outside In Technology.  Successful attacks of this vulnerability can result in  unauthorized creation, deletion or modification access to critical data or all Oracle Outside In Technology accessible data as well as  unauthorized read access to a subset of Oracle Outside In Technology accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Outside In Technology. CVSS 3.1 Base Score 6.6 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L).","summary":"Oracle Outside In Technology's Clean Content SDK component, version 8.5.8, has a flaw that lets a logged-in low-privilege user on the host compromise the product. A successful attack can create, delete or modify critical data and read a subset of data, and can partly deny service.","severity":"medium","cvss":6.6,"epss":0.00125,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["fusion-middleware","oracle","outside-in","package","self-hosted"],"not_affected_if":["no-outside-in-installed","no-untrusted-local-logons"],"how_to_check":"- Confirm whether `Oracle Outside In` 8.5.8 is installed (the Clean Content SDK component of Oracle Fusion Middleware)\n- Check the vendor's advisory for the exact affected versions: unknown","fix":"- Apply the Oracle Critical Patch Update that covers CVE-2026-91475 for Oracle Outside In: unknown version\n- Restrict local logons on hosts running Oracle Outside In until patched","status":"open","published_at":"2026-10-20T22:20:51+00:00","first_seen_at":"2026-10-23T21:57:27+00:00","triaged_at":"2026-10-25T03:46:49+00:00","updated_at":"2026-10-25T12:38:51+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-25T03:46:49Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the Oracle Critical Patch Update that covers CVE-2026-91475 for Oracle Outside In: unknown version\n- Restrict local logons on hosts running Oracle Outside In until patched","reach":"local","title":"Oracle Outside In Clean Content SDK: local low-privilege user can modify data","impact":"medium","summary":"Oracle Outside In Technology's Clean Content SDK component, version 8.5.8, has a flaw that lets a logged-in low-privilege user on the host compromise the product. A successful attack can create, delete or modify critical data and read a subset of data, and can partly deny service.","category":"package","nicknames":[],"who_cares":["oracle","fusion-middleware","outside-in","self-hosted"],"confidence":0.6,"needs_auth":"yes","worst_case":"Low-privilege local user modifies or deletes critical data and reads some","analyst_note":"Find the Oracle CPU advisory for CVE-2026-91475 to get the patched version and the affected product list.","how_to_check":"- Confirm whether `Oracle Outside In` 8.5.8 is installed (the Clean Content SDK component of Oracle Fusion Middleware)\n- Check the vendor's advisory for the exact affected versions: unknown","needs_analyst":true,"not_affected_if":["no-outside-in-installed","no-untrusted-local-logons"],"who_is_affected":"Teams that run Oracle Outside In Technology, which the sources name as the Clean Content SDK, on servers where other users can log on. The sources describe a local attack that needs a low-privilege account on the machine that runs the component. Systems that do not ship this SDK can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000665,"input_tokens":3567,"output_tokens":616,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':16A,19A '-91475':17A,20A '/av':205C '3.1':192C,204C '6.6':195C '8.5.8':42B,108C 'abil':176C 'access':146C,156C,163C,172C 'affect':106C 'allow':112C 'attack':64B,115C,134C 'avail':199C 'base':193C 'caus':178C 'clean':4A,37B,98C 'compon':40B,95C 'compromis':59B,128C 'confidenti':196C 'content':5A,38B,99C 'creat':66B 'creation':142C 'critic':70B,148C 'cve':15A,18A 'cvss':191C,201C,203C 'data':14A,71B,77B,149C,157C,173C 'delet':67B,143C 'deni':81B 'denial':181C 'dos':185C 'easili':109C 'execut':126C 'exploit':110C 'flaw':45B 'fusion':22B,93C 'fusion-middlewar':21B 'h/a':212C 'host':31B,58B 'impact':200C 'infrastructur':120C 'integr':197C 'l':213C 'l/ac':206C 'l/i':211C 'l/pr':207C 'l/ui':208C 'let':47B 'local':7A 'log':50B 'logged-in':49B 'logon':117C 'low':9A,53B,113C 'low-privileg':8A,52B 'middlewar':23B,94C 'modif':145C 'modifi':13A,69B 'n/s':209C 'oracl':1A,24B,32B,86C,92C,122C,129C,152C,168C,187C 'outsid':2A,26B,33B,87C,96C,123C,130C,153C,169C,188C 'outside-in':25B 'packag':28B 'part':80B 'partial':180C,184C 'privileg':10A,54B,114C 'product':61B,90C 'read':73B,162C 'result':139C 'score':194C 'sdk':6A,39B,100C 'self':30B 'self-host':29B 'servic':82B,183C 'subset':75B,166C 'success':63B,133C 'support':102C 'technolog':35B,89C,125C,132C,155C,171C,190C 'u/c':210C 'unauthor':141C,161C,175C 'user':11A,55B 'vector':202C 'version':41B,103C 'vulner':83C,111C,137C 'well':159C","nicknames":[],"mitigations":[],"who_affected":"Teams that run Oracle Outside In Technology, which the sources name as the Clean Content SDK, on servers where other users can log on. The sources describe a local attack that needs a low-privilege account on the machine that runs the component. Systems that do not ship this SDK can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:51+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91475","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91475","severity":null,"published_at":"2026-10-20T22:20:51+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-2026-91475","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-91475","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"}