{"id":"CVE-2026-102638","kind":"vulnerability","aliases":["CVE-2026-102638"],"related":[],"title":"Autodesk Fusion: crafted library file's HTML description enables stored XSS","description":"A maliciously crafted HTML payload in the description of an electronic library (.lbr) file, when displayed in the Library Manager after the library is imported, can trigger a Stored Cross-site Scripting (XSS) vulnerability in the Autodesk Fusion desktop application. A malicious actor may leverage this vulnerability to read local files or execute arbitrary code in the context of the current process.","summary":"A malicious electronic library (.lbr) file containing crafted HTML in its description can trigger stored cross-site scripting when shown in Fusion's Library Manager after import. Per the description, an attacker can then read local files or run arbitrary code in the current process.","severity":"high","cvss":7.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["autodesk-fusion","desktop","other","windows"],"not_affected_if":["no-external-lbr-imports","no-fusion-install"],"how_to_check":"- unknown","fix":"- unknown","status":"open","published_at":"2026-10-27T17:16:55+00:00","first_seen_at":"2026-10-27T17:32:44+00:00","triaged_at":"2026-10-27T17:34:42+00:00","updated_at":"2026-10-27T17:34:42+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-10-27T17:34:42Z","model":"claude-haiku-5-5","output":{"fix":"- unknown","reach":"local","title":"Autodesk Fusion: crafted library file's HTML description enables stored XSS","impact":"high","summary":"A malicious electronic library (.lbr) file containing crafted HTML in its description can trigger stored cross-site scripting when shown in Fusion's Library Manager after import. Per the description, an attacker can then read local files or run arbitrary code in the current process.","category":"other","nicknames":[],"who_cares":["autodesk-fusion","desktop","windows"],"confidence":0.6,"needs_auth":"no","worst_case":"Local files read and arbitrary code run in the app process","analyst_note":"Find the affected and fixed Fusion versions and any Autodesk advisory via the NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2026-102638.","how_to_check":"- unknown","needs_analyst":true,"not_affected_if":["no-fusion-install","no-external-lbr-imports"],"who_is_affected":"Teams using the Autodesk Fusion desktop application who import .lbr library files, especially from untrusted sources. The sources do not name affected versions. Teams that do not use Fusion or do not import external .lbr libraries can likely skip it.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"unknown"},"cost_usd":0.000567,"input_tokens":3344,"output_tokens":465,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-102638':14A,17A '-2026':13A,16A 'actor':113C 'applic':110C 'arbitrari':64B,124C 'attack':56B 'autodesk':1A,19B,107C 'autodesk-fus':18B 'code':65B,125C 'contain':30B 'context':128C 'craft':3A,31B,72C 'cross':40B,100C 'cross-sit':39B,99C 'current':68B,131C 'cve':12A,15A 'descript':8A,35B,54B,77C 'desktop':21B,109C 'display':85C 'electron':26B,80C 'enabl':9A 'execut':123C 'file':5A,29B,61B,83C,121C 'fusion':2A,20B,46B,108C 'html':7A,32B,73C 'import':51B,94C 'lbr':28B,82C 'leverag':115C 'librari':4A,27B,48B,81C,88C,92C 'local':60B,120C 'malici':25B,71C,112C 'manag':49B,89C 'may':114C 'payload':74C 'per':52B 'process':69B,132C 'read':59B,119C 'run':63B 'script':42B,102C 'shown':44B 'site':41B,101C 'store':10A,38B,98C 'trigger':37B,96C 'vulner':104C,117C 'window':23B 'xss':11A,103C","nicknames":[],"mitigations":[],"who_affected":"Teams using the Autodesk Fusion desktop application who import .lbr library files, especially from untrusted sources. The sources do not name affected versions. Teams that do not use Fusion or do not import external .lbr libraries can likely skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-27T17:16:55+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","cvss_by":"psirt@autodesk.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-102638","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102638","severity":null,"published_at":"2026-10-27T17:16:55+00:00","modified_at":"2026-10-27T17:16:55+00:00","first_seen_at":"2026-10-27T17:32:44+00:00","fetched_at":"2026-10-27T17:32:44+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"}