{"id":"CVE-2026-91320","kind":"vulnerability","aliases":["CVE-2026-91320"],"related":[],"title":"Oracle JDeveloper: privileged local user can modify data or crash IDE","description":"Vulnerability in the Oracle JDeveloper product of Oracle Fusion Middleware (component: Oracle JDeveloper).  Supported versions that are affected are 12.2.1.4.0 and  14.1.2.0.0. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where Oracle JDeveloper executes to compromise Oracle JDeveloper.  Successful attacks of this vulnerability can result in  unauthorized creation, deletion or modification access to critical data or all Oracle JDeveloper accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle JDeveloper. CVSS 3.1 Base Score 5.7 (Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H).","summary":"Oracle JDeveloper 12.2.1.4.0 and 14.1.2.0.0 contain a flaw that lets a highly privileged local user with logon to the host change data or cause a repeatable crash. The advisory rates it CVSS 5.7 (medium), with integrity and availability impact only.","severity":"medium","cvss":5.7,"epss":0.0012,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["java","oracle-fusion-middleware","oracle-jdeveloper","package"],"not_affected_if":["no-shared-logon","other-jdeveloper-versions"],"how_to_check":"- Check the installed JDeveloper version in Help > About or the install directory name, and compare against `12.2.1.4.0` and `14.1.2.0.0`\n- unknown","fix":"- Move JDeveloper to a release newer than `12.2.1.4.0` or `14.1.2.0.0` once Oracle publishes the patched build; the sources do not name the fixed version\n- unknown","status":"open","published_at":"2026-10-20T22:20:33+00:00","first_seen_at":"2026-10-23T21:57:26+00:00","triaged_at":"2026-10-25T04:10:28+00:00","updated_at":"2026-10-25T12:38:52+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-25T04:10:28Z","model":"claude-haiku-5-5","output":{"fix":"- Move JDeveloper to a release newer than `12.2.1.4.0` or `14.1.2.0.0` once Oracle publishes the patched build; the sources do not name the fixed version\n- unknown","reach":"local","title":"Oracle JDeveloper: privileged local user can modify data or crash IDE","impact":"medium","summary":"Oracle JDeveloper 12.2.1.4.0 and 14.1.2.0.0 contain a flaw that lets a highly privileged local user with logon to the host change data or cause a repeatable crash. The advisory rates it CVSS 5.7 (medium), with integrity and availability impact only.","category":"package","nicknames":[],"who_cares":["oracle-jdeveloper","java","oracle-fusion-middleware"],"confidence":0.6,"needs_auth":"yes","worst_case":"Attacker alters JDeveloper-accessible data or crashes the IDE repeatedly","analyst_note":"Check Oracle's Critical Patch Update advisory for the fixed JDeveloper build and whether the 14.1.2.0.0 line has a patch.","how_to_check":"- Check the installed JDeveloper version in Help > About or the install directory name, and compare against `12.2.1.4.0` and `14.1.2.0.0`\n- unknown","needs_analyst":true,"not_affected_if":["other-jdeveloper-versions","no-shared-logon"],"who_is_affected":"Teams that run Oracle JDeveloper on shared or build machines where other people hold logon rights. The attacker must already hold high privileges on that infrastructure, so single-user developer workstations carry less risk. Teams not running these JDeveloper versions can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000666,"input_tokens":3548,"output_tokens":622,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A '-91320':14A,17A '/av':161C '12.2.1.4.0':29B,85C '14.1.2.0.0':31B,87C '3.1':149C,160C '5.7':59B,152C 'abil':134C 'access':122C,130C 'advisori':55B 'affect':83C 'allow':92C 'attack':95C,110C 'avail':64B,155C 'base':150C 'caus':50B,136C 'chang':47B 'complet':143C 'compon':76C 'compromis':106C 'contain':32B 'crash':10A,53B,142C 'creation':118C 'critic':124C 'cve':12A,15A 'cvss':58B,148C,157C,159C 'data':8A,48B,125C,131C 'delet':119C 'difficult':88C 'dos':144C 'execut':104C 'exploit':90C 'flaw':34B 'frequent':140C 'fusion':21B,74C 'h':169C 'h/a':168C 'h/pr':163C 'h/ui':164C 'hang':138C 'high':38B,93C 'host':46B 'ide':11A 'impact':65B,156C 'infrastructur':100C 'integr':62B,153C 'java':18B 'jdevelop':2A,25B,28B,70C,78C,103C,108C,129C,147C 'l/ac':162C 'let':36B 'local':4A,40B 'logon':43B,97C 'medium':60B 'middlewar':22B,75C 'modif':121C 'modifi':7A 'n/i':167C 'n/s':165C 'oracl':1A,20B,24B,27B,69C,73C,77C,102C,107C,128C,146C 'oracle-fusion-middlewar':19B 'oracle-jdevelop':23B 'packag':26B 'privileg':3A,39B,94C 'product':71C 'rate':56B 'repeat':52B,141C 'result':115C 'score':151C 'success':109C 'support':79C 'u/c':166C 'unauthor':117C,133C 'user':5A,41B 'vector':158C 'version':80C 'vulner':66C,91C,113C","nicknames":[],"mitigations":[],"who_affected":"Teams that run Oracle JDeveloper on shared or build machines where other people hold logon rights. The attacker must already hold high privileges on that infrastructure, so single-user developer workstations carry less risk. Teams not running these JDeveloper versions can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:33+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91320","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91320","severity":null,"published_at":"2026-10-20T22:20:33+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},{"source":"epss","external_id":"CVE-2026-91320","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-91320","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-25T12:38:52+00:00","fetched_at":"2026-10-25T12:38:52+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"}