{"id":"CVE-2026-91338","kind":"vulnerability","aliases":["CVE-2026-91338"],"related":[],"title":"Oracle E-Business Suite iSupport: low-privileged users can modify and delete data","description":"Vulnerability in the iSupport product of Oracle E-Business Suite (component: Internal operations).  Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise iSupport.  Successful attacks of this vulnerability can result in  unauthorized creation, deletion or modification access to critical data or all iSupport accessible data as well as  unauthorized read access to a subset of iSupport accessible data. CVSS 3.1 Base Score 7.1 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N).","summary":"Oracle's iSupport module in E-Business Suite has a flaw in its Internal operations component that lets a low-privileged user reach it over HTTP. A successful attack can create, change or delete critical iSupport data and read a subset of its data.","severity":"high","cvss":7.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["enterprise-erp","isupport","oracle-ebs","self-hosted","vendor"],"not_affected_if":["isupport-not-installed","release-outside-range"],"how_to_check":"- Confirm whether iSupport is installed in your Oracle E-Business Suite environment and note the release (affected: `12.2.3` through `12.2.15`)\n- Check the iSupport version against Oracle's Critical Patch Update advisory listed in NVD for CVE-2026-91338","fix":"- Apply the Oracle Critical Patch Update fix for iSupport in E-Business Suite; the patched version is unknown from the sources\n- Move affected installs off `12.2.3` through `12.2.15` to a patched release","status":"open","published_at":"2026-10-20T22:20:36+00:00","first_seen_at":"2026-10-23T21:57:26+00:00","triaged_at":"2026-10-25T03:34:10+00:00","updated_at":"2026-10-25T03:34:10+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-25T03:34:10Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the Oracle Critical Patch Update fix for iSupport in E-Business Suite; the patched version is unknown from the sources\n- Move affected installs off `12.2.3` through `12.2.15` to a patched release","reach":"internet","title":"Oracle E-Business Suite iSupport: low-privileged users can modify and delete data","impact":"medium","summary":"Oracle's iSupport module in E-Business Suite has a flaw in its Internal operations component that lets a low-privileged user reach it over HTTP. A successful attack can create, change or delete critical iSupport data and read a subset of its data.","category":"vendor","nicknames":[],"who_cares":["oracle-ebs","isupport","self-hosted","enterprise-erp"],"confidence":0.6,"needs_auth":"yes","worst_case":"Attacker with a low-privileged account can modify or delete iSupport data","analyst_note":"Confirm patched iSupport version and Oracle advisory details at the NVD entry and Oracle CPU advisory; sources do not name the fix.","how_to_check":"- Confirm whether iSupport is installed in your Oracle E-Business Suite environment and note the release (affected: `12.2.3` through `12.2.15`)\n- Check the iSupport version against Oracle's Critical Patch Update advisory listed in NVD for CVE-2026-91338","needs_analyst":true,"not_affected_if":["iSupport-not-installed","release-outside-range"],"who_is_affected":"Organizations running Oracle E-Business Suite with the iSupport module on release 12.2.3 through 12.2.15, reachable over HTTP by low-privileged accounts. Sites without iSupport deployed, or on releases outside that range, can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000666,"input_tokens":3470,"output_tokens":637,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':17A,20A '-91338':18A,21A '/av':164C '12.2.15':100C '12.2.3':99C '3.1':152C,163C '7.1':155C 'access':110C,129C,136C,143C,149C 'affect':97C 'allow':104C 'attack':63B,107C,117C 'base':153C 'busi':4A,40B,88C 'chang':66B 'compon':49B,90C 'compromis':114C 'confidenti':156C 'creat':65B 'creation':125C 'critic':69B,131C 'cve':16A,19A 'cvss':151C,160C,162C 'data':15A,71B,78B,132C,137C,150C 'delet':14A,68B,126C 'e':3A,39B,87C 'e-busi':2A,38B,86C 'easili':101C 'eb':28B 'enterpris':23B 'enterprise-erp':22B 'erp':24B 'exploit':102C 'flaw':44B 'h/a':171C 'host':31B 'http':60B,112C 'impact':159C 'integr':158C 'intern':47B,91C 'isupport':6A,25B,35B,70B,82C,115C,135C,148C 'l/i':170C 'l/pr':166C 'l/ui':167C 'let':51B 'low':8A,54B,105C 'low-privileg':7A,53B 'modif':128C 'modifi':12A 'modul':36B 'n':172C 'n/ac':165C 'n/s':168C 'network':109C 'oper':48B,92C 'oracl':1A,27B,33B,85C 'oracle-eb':26B 'privileg':9A,55B,106C 'product':83C 'reach':57B 'read':73B,142C 'result':122C 'score':154C 'self':30B 'self-host':29B 'subset':75B,146C 'success':62B,116C 'suit':5A,41B,89C 'support':93C 'u/c':169C 'unauthor':124C,141C 'user':10A,56B 'vector':161C 'vendor':32B 'version':94C 'via':111C 'vulner':79C,103C,120C 'well':139C","nicknames":[],"mitigations":[],"who_affected":"Organizations running Oracle E-Business Suite with the iSupport module on release 12.2.3 through 12.2.15, reachable over HTTP by low-privileged accounts. Sites without iSupport deployed, or on releases outside that range, can skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:36+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91338","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91338","severity":null,"published_at":"2026-10-20T22:20:36+00:00","modified_at":"2026-10-21T18:44:40+00:00","first_seen_at":"2026-10-23T21:57:26+00:00","fetched_at":"2026-10-23T22:29:00+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"}