{"id":"CVE-2026-123841","kind":"vulnerability","aliases":["CVE-2026-123841"],"related":[],"title":"JetBrains IntelliJ IDEA: imported settings archive symlinks allow code execution","description":"In JetBrains IntelliJ IDEA before 2026.3 code execution was possible via symlinks in an imported settings archive","summary":"Importing a settings archive into JetBrains IntelliJ IDEA before 2026.3 could run code, because symlinks inside the archive were followed. An attacker who supplies a crafted settings archive can get code executed on the developer's machine.","severity":"high","cvss":7.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["developer-workstation","intellij-idea","jetbrains","other"],"not_affected_if":["no-settings-import","trusted-archives-only"],"how_to_check":"- Open IntelliJ IDEA and check the version under Help > About, or run `idea --version` where the launcher is on the PATH\n- Compare the installed build against `2026.3`; anything earlier is listed as affected","fix":"- JetBrains IntelliJ IDEA: upgrade to `2026.3` or later","status":"open","published_at":"2026-11-06T17:17:22+00:00","first_seen_at":"2026-11-06T17:43:13+00:00","triaged_at":"2026-11-06T17:44:58+00:00","updated_at":"2026-11-06T17:44:58+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-11-06T17:44:58Z","model":"claude-haiku-5-5","output":{"fix":"- JetBrains IntelliJ IDEA: upgrade to `2026.3` or later","reach":"local","title":"JetBrains IntelliJ IDEA: imported settings archive symlinks allow code execution","impact":"high","summary":"Importing a settings archive into JetBrains IntelliJ IDEA before 2026.3 could run code, because symlinks inside the archive were followed. An attacker who supplies a crafted settings archive can get code executed on the developer's machine.","audience":"developers","category":"other","nicknames":[],"who_cares":["intellij-idea","jetbrains","developer-workstation"],"confidence":0.6,"fix_status":"available","needs_auth":"no","worst_case":"Code runs on the developer's workstation via a crafted archive","analyst_note":"Check the JetBrains advisory for the exact import flow and whether a user must confirm the import; sources only give the NVD description.","how_to_check":"- Open IntelliJ IDEA and check the version under Help > About, or run `idea --version` where the launcher is on the PATH\n- Compare the installed build against `2026.3`; anything earlier is listed as affected","plain_action":"","needs_analyst":true,"not_affected_if":["no-settings-import","trusted-archives-only"],"who_is_affected":"Developers who run IntelliJ IDEA versions before 2026.3 and import settings archives, especially ones obtained from others. Teams that never import settings archives from untrusted sources have a much smaller exposure. The sources do not say whether managed or default-configured installs differ.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"unknown"},"cost_usd":0.000703,"input_tokens":4171,"output_tokens":571,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-123841':13A,16A '-2026':12A,15A '2026.3':33B,66C 'allow':8A 'archiv':6A,27B,41B,51B,77C 'attack':45B 'code':9A,36B,54B,67C 'could':34B 'craft':49B 'cve':11A,14A 'develop':18B,58B 'developer-workst':17B 'execut':10A,55B,68C 'follow':43B 'get':53B 'idea':3A,22B,31B,64C 'import':4A,24B,75C 'insid':39B 'intellij':2A,21B,30B,63C 'intellij-idea':20B 'jetbrain':1A,23B,29B,62C 'machin':60B 'possibl':70C 'run':35B 'set':5A,26B,50B,76C 'suppli':47B 'symlink':7A,38B,72C 'via':71C 'workstat':19B","nicknames":[],"mitigations":[],"who_affected":"Developers who run IntelliJ IDEA versions before 2026.3 and import settings archives, especially ones obtained from others. Teams that never import settings archives from untrusted sources have a much smaller exposure. The sources do not say whether managed or default-configured installs differ.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"developers","plain_action":null,"pkeys":[],"ptokens":[],"labels":["developerworkstation","high","intellijidea","jetbrains","other"],"campaign_type":null,"search_a":"'-123841':13A,16A '-2026':12A,15A 'allow':8A 'archiv':6A 'code':9A 'cve':11A,14A 'execut':10A 'idea':3A 'import':4A 'intellij':2A 'jetbrain':1A 'set':5A 'symlink':7A","search_b":"'2026.3':33B 'archiv':27B,41B,51B 'attack':45B 'code':36B,54B 'could':34B 'craft':49B 'develop':18B,58B 'developer-workst':17B 'execut':55B 'follow':43B 'get':53B 'idea':22B,31B 'import':24B 'insid':39B 'intellij':21B,30B 'intellij-idea':20B 'jetbrain':23B,29B 'machin':60B 'run':35B 'set':26B,50B 'suppli':47B 'symlink':38B 'workstat':19B","search_c":"'2026.3':66C 'archiv':77C 'code':67C 'execut':68C 'idea':64C 'import':75C 'intellij':63C 'jetbrain':62C 'possibl':70C 'set':76C 'symlink':72C 'via':71C","first_public_at":"2026-11-06T17:17:22+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvss_by":"cve@jetbrains.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-123841","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123841","severity":null,"published_at":"2026-11-06T17:17:22+00:00","modified_at":"2026-11-06T17:17:22+00:00","first_seen_at":"2026-11-06T17:43:13+00:00","fetched_at":"2026-11-06T17:43:13+00:00","note":null}],"documents":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}