{"id":"CVE-2026-91415","kind":"vulnerability","aliases":["CVE-2026-91415"],"related":[],"title":"Java SE and GraalVM: 2D component flaw enables crash and data access","description":"Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: 2D).  Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle GraalVM for JDK: 17.0.20.1 and  21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition as well as  unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data and  unauthorized read access to a subset of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 7.0 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H).","summary":"A flaw in the 2D component of Oracle Java SE and GraalVM lets an unauthenticated attacker send crafted input through network-facing APIs, such as a web service that passes data to them. Successful attacks can crash or hang the Java process, and can read or change some data the application can access.","severity":"high","cvss":7.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["graalvm","java","java-applets","jvm","runtime","web-services"],"not_affected_if":["no-untrusted-input-to-2d","patched-version"],"how_to_check":"- Run `java -version` and compare the output against the affected versions listed in the sources (8u503, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27).\n- For GraalVM, check the version of the JDK in use against 17.0.20.1, 21.0.12.1, and 21.3.19.1.1.","fix":"- Update Oracle Java SE to the patched release for your line, per Oracle's Critical Patch Update advisory for the affected versions.\n- Update Oracle GraalVM for JDK to 17.0.20.1 or 21.0.12.1 or later, and GraalVM Enterprise Edition past 21.3.19.1.1.","status":"open","published_at":"2026-10-20T22:20:44+00:00","first_seen_at":"2026-10-23T21:57:26+00:00","triaged_at":"2026-10-25T03:38:09+00:00","updated_at":"2026-10-25T03:38:09+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-10-25T03:38:09Z","model":"claude-haiku-5-5","output":{"fix":"- Update Oracle Java SE to the patched release for your line, per Oracle's Critical Patch Update advisory for the affected versions.\n- Update Oracle GraalVM for JDK to 17.0.20.1 or 21.0.12.1 or later, and GraalVM Enterprise Edition past 21.3.19.1.1.","reach":"internet","title":"Java SE and GraalVM: 2D component flaw enables crash and data access","impact":"medium","summary":"A flaw in the 2D component of Oracle Java SE and GraalVM lets an unauthenticated attacker send crafted input through network-facing APIs, such as a web service that passes data to them. Successful attacks can crash or hang the Java process, and can read or change some data the application can access.","category":"runtime","nicknames":[],"who_cares":["java","jvm","graalvm","web-services","java-applets"],"confidence":0.7,"needs_auth":"no","worst_case":"Process crashes repeatedly and some data can be read or altered","analyst_note":"Check Oracle's Critical Patch Update advisory for exact fixed versions and whether the 2D flaw needs a specific input path; the sources list no details on that.","how_to_check":"- Run `java -version` and compare the output against the affected versions listed in the sources (8u503, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27).\n- For GraalVM, check the version of the JDK in use against 17.0.20.1, 21.0.12.1, and 21.3.19.1.1.","needs_analyst":true,"not_affected_if":["patched-version","no-untrusted-input-to-2d"],"who_is_affected":"Any service running an affected Java SE or GraalVM build that passes network-supplied data to the 2D component's APIs, such as a web service, is potentially exposed. Client machines running sandboxed Java applets or Java Web Start apps that load untrusted code also fall under the advisory. Teams that do not run these versions or do not expose 2D APIs to untrusted input can deprioritize.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000767,"input_tokens":3944,"output_tokens":745,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-91415':15A,18A '/av':317C '11.0.32.1':117C '17.0.20.1':118C,126C '21.0.12.1':119C,128C '21.3.19.1.1':133C '25.0.4.1':120C '27':121C '2d':5A,33B,103C '3.1':304C,316C '7.0':307C '8u503':113C,115C '8u503-perf':114C 'abil':169C 'access':12A,82B,143C,200C,215C,220C,236C 'affect':108C 'allow':138C 'also':264C 'api':52B,246C,261C 'applet':23B,281C 'appli':265C 'applic':80B,277C 'attack':44B,64B,140C,161C 'avail':311C 'base':305C 'caus':171C 'chang':76B 'client':271C 'code':287C,289C 'come':291C 'complet':178C 'compon':6A,34B,102C,250C 'compromis':148C 'confidenti':308C 'craft':46B 'crash':9A,66B,177C 'cve':13A,16A 'cvss':303C,313C,315C 'data':11A,60B,78B,216C,237C,258C 'delet':199C 'deploy':268C 'difficult':134C 'dos':179C 'e.g':251C,288C 'edit':96C,132C,159C,191C,214C,235C 'enabl':8A 'enterpris':95C,131C,158C,190C,213C,234C 'exploit':136C,243C 'face':51B 'flaw':7A,30B 'frequent':175C 'graalvm':4A,19B,40B,90C,94C,123C,130C,153C,157C,185C,189C,208C,212C,229C,233C 'h':325C 'h/pr':319C 'hang':68B,173C 'impact':312C 'input':47B 'insert':197C 'integr':309C 'internet':294C 'java':1A,20B,22B,37B,70B,87C,100C,111C,150C,182C,205C,226C,267C,274C,280C,299C 'java-applet':21B 'jdk':92C,125C,155C,187C,210C,231C 'jvm':24B 'l/a':324C 'l/i':323C 'let':41B 'load':283C 'multipl':145C 'n/ac':318C 'n/s':321C 'n/ui':320C 'network':50B,142C 'network-fac':49B 'note':238C 'oracl':36B,86C,89C,93C,99C,110C,122C,129C,149C,152C,156C,181C,184C,188C,204C,207C,211C,225C,228C,232C 'pass':59B 'perf':116C 'process':71B 'product':97C 'protocol':146C 'read':74B,219C 'reli':296C 'repeat':176C 'result':166C 'run':272C,285C 'runtim':25B 'sandbox':273C,279C,300C 'score':306C 'se':2A,38B,88C,101C,112C,151C,183C,206C,227C 'secur':302C 'send':45B 'servic':28B,57B,255C 'specifi':249C 'start':276C 'subset':223C 'success':63B,160C 'suppli':257C 'support':104C 'typic':269C 'u/c':322C 'unauthent':43B,139C 'unauthor':168C,195C,218C 'untrust':286C 'updat':196C 'use':245C 'vector':314C 'version':105C 'via':144C 'vulner':83C,137C,164C,240C,263C 'web':27B,56B,254C,275C 'web-servic':26B 'well':193C","nicknames":[],"mitigations":[],"who_affected":"Any service running an affected Java SE or GraalVM build that passes network-supplied data to the 2D component's APIs, such as a web service, is potentially exposed. Client machines running sandboxed Java applets or Java Web Start apps that load untrusted code also fall under the advisory. Teams that do not run these versions or do not expose 2D APIs to untrusted input can deprioritize.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:44+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91415","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91415","severity":null,"published_at":"2026-10-20T22:20:44+00:00","modified_at":"2026-10-23T21:17:25+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"}