{"id":"CVE-2026-42949","kind":"vulnerability","aliases":["CVE-2026-42949"],"related":[],"title":"FUXA: unauthenticated request to /api/runscript runs privileged operations","description":"A authorization bypass vulnerability exists in the /api/runscript functionality of FUXA (version(s): 1.3.2-2809). A specially crafted HTTP request can lead to execute priviledged operation. An attacker can make an unauthenticated HTTP request to trigger this vulnerability.","summary":"FUXA, a web-based SCADA and HMI tool, has an authorization bypass in its /api/runscript endpoint, version 1.3.2-2809 named in the advisory. A specially crafted unauthenticated HTTP request can trigger a privileged operation on the server.","severity":"medium","cvss":5.6,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["fuxa","industrial-control","runtime","scada","self-hosted"],"not_affected_if":["not-exposed-to-network","other-versions"],"how_to_check":"- Check the running FUXA version against `1.3.2-2809`, the version named in the NVD entry.\n- Confirm whether the instance is reachable from untrusted networks, since the request needs no login.","fix":null,"status":"open","published_at":"2026-10-29T04:18:36+00:00","first_seen_at":"2026-10-29T04:41:58+00:00","triaged_at":"2026-10-29T04:43:07+00:00","updated_at":"2026-10-29T04:43:07+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-10-29T04:43:07Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"FUXA: unauthenticated request to /api/runscript runs privileged operations","impact":"high","summary":"FUXA, a web-based SCADA and HMI tool, has an authorization bypass in its /api/runscript endpoint, version 1.3.2-2809 named in the advisory. A specially crafted unauthenticated HTTP request can trigger a privileged operation on the server.","audience":"businesses","category":"runtime","nicknames":[],"who_cares":["fuxa","scada","industrial-control","self-hosted"],"confidence":0.6,"fix_status":"unknown","needs_auth":"no","worst_case":"unauthenticated attacker runs privileged operations on the FUXA server","analyst_note":"Check the FUXA project or vendor advisory for the fixed version and the exact scope of privileged operations; the NVD entry gives no fix.","how_to_check":"- Check the running FUXA version against `1.3.2-2809`, the version named in the NVD entry.\n- Confirm whether the instance is reachable from untrusted networks, since the request needs no login.\n- unknown for any other specific check, as the sources do not say.","plain_action":"","needs_analyst":true,"not_affected_if":["not-exposed-to-network","other-versions"],"who_is_affected":"FUXA instances exposed to a network that untrusted users can reach, particularly the HTTP interface that serves /api/runscript. The advisory names version 1.3.2-2809; the sources do not state which other versions are affected or what a privileged operation includes. Teams that keep FUXA off untrusted networks have less exposure.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000712,"input_tokens":4131,"output_tokens":597,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':10A,13A '-2809':43B,76C '-42949':11A,14A '/api/runscript':5A,39B,69C '1.3.2':42B,75C 'advisori':47B 'attack':89C 'author':35B,63C 'base':28B 'bypass':36B,64C 'control':18B 'craft':50B,79C 'cve':9A,12A 'endpoint':40B 'execut':85C 'exist':66C 'function':70C 'fuxa':1A,15B,24B,72C 'hmi':31B 'host':23B 'http':52B,80C,94C 'industri':17B 'industrial-control':16B 'lead':83C 'make':91C 'name':44B 'oper':8A,58B,87C 'priviledg':86C 'privileg':7A,57B 'request':3A,53B,81C,95C 'run':6A 'runtim':19B 'scada':20B,29B 'self':22B 'self-host':21B 'server':61B 'special':49B,78C 'tool':32B 'trigger':55B,97C 'unauthent':2A,51B,93C 'version':41B,73C 'vulner':65C,99C 'web':27B 'web-bas':26B","nicknames":[],"mitigations":[],"who_affected":"FUXA instances exposed to a network that untrusted users can reach, particularly the HTTP interface that serves /api/runscript. The advisory names version 1.3.2-2809; the sources do not state which other versions are affected or what a privileged operation includes. Teams that keep FUXA off untrusted networks have less exposure.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"businesses","plain_action":null,"first_public_at":"2026-10-29T04:18:36+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","cvss_by":"talos-cna@cisco.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-42949","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42949","severity":null,"published_at":"2026-10-29T04:18:36+00:00","modified_at":"2026-10-29T04:18:36+00:00","first_seen_at":"2026-10-29T04:41:58+00:00","fetched_at":"2026-10-29T04:41:58+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"}