{"id":"CVE-2026-123748","kind":"vulnerability","aliases":["CVE-2026-123748"],"related":[],"title":"grok2api: WebSocket voice proxy flaw lets remote attackers exhaust resources","description":"A security flaw has been discovered in chenyme grok2api up to 3.1.6. Affected by this vulnerability is the function proxyVoiceWebSocket of the file backend/internal/transport/http/inference/voice_ws_handler.go of the component WebSocket Proxy. The manipulation results in resource consumption. The attack may be launched remotely. Upgrading to version 3.1.7 addresses this issue. The patch is identified as 7ad0f791f0a9eb5a0ddfe38ac4dfcef01e19a6d4. It is suggested to upgrade the affected component.","summary":"grok2api is a proxy that exposes Grok model access through an API. A flaw in its WebSocket voice proxy handler lets a remote caller consume server resources, which can slow or disrupt the service.","severity":"medium","cvss":5.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["ai-gateway","ai-tooling","grok2api","self-hosted","websocket"],"not_affected_if":["no-voice-websocket-exposure","version-3.1.7-or-later"],"how_to_check":"- Check the installed grok2api version; versions up to and including `3.1.6` are affected.\n- Look at the WebSocket proxy in `backend/internal/transport/http/inference/voice_ws_handler.go` (function `proxyVoiceWebSocket`).","fix":"- grok2api: upgrade to `3.1.7` (patch commit 7ad0f791f0a9eb5a0ddfe38ac4dfcef01e19a6d4).","status":"open","published_at":"2026-11-06T18:18:04+00:00","first_seen_at":"2026-11-06T18:44:08+00:00","triaged_at":"2026-11-06T18:45:26+00:00","updated_at":"2026-11-06T18:45:26+00:00","category":"ai-tooling","confidence":0.7,"triage":{"at":"2026-11-06T18:45:26Z","model":"claude-haiku-5-5","output":{"fix":"- grok2api: upgrade to `3.1.7` (patch commit 7ad0f791f0a9eb5a0ddfe38ac4dfcef01e19a6d4).","reach":"internet","title":"grok2api: WebSocket voice proxy flaw lets remote attackers exhaust resources","impact":"medium","summary":"grok2api is a proxy that exposes Grok model access through an API. A flaw in its WebSocket voice proxy handler lets a remote caller consume server resources, which can slow or disrupt the service.","audience":"businesses","category":"ai-tooling","nicknames":[],"who_cares":["grok2api","self-hosted","websocket","ai-gateway"],"confidence":0.7,"fix_status":"available","needs_auth":"unknown","worst_case":"Remote callers exhaust server resources, degrading or disrupting the service","analyst_note":"","how_to_check":"- Check the installed grok2api version; versions up to and including `3.1.6` are affected.\n- Look at the WebSocket proxy in `backend/internal/transport/http/inference/voice_ws_handler.go` (function `proxyVoiceWebSocket`).","plain_action":"","needs_analyst":false,"not_affected_if":["version-3.1.7-or-later","no-voice-websocket-exposure"],"who_is_affected":"Teams that run grok2api, including self-hosted instances, are exposed if the voice WebSocket endpoint is reachable from the network. The flaw is in the voice proxy path, so deployments that do not serve voice traffic are less exposed. Whether an account is needed is unknown from the sources.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.001111,"input_tokens":4335,"output_tokens":1355,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-123748':13A,16A '-2026':12A,15A '3.1.6':73C '3.1.7':106C '7ad0f791f0a9eb5a0ddfe38ac4dfcef01e19a6d4':115C 'access':36B 'address':107C 'affect':74C,122C 'ai':18B,21B 'ai-gateway':17B 'ai-tool':20B 'api':39B 'attack':8A,98C 'backend/internal/transport/http/inference/voice_ws_handler.go':85C 'caller':51B 'chenym':69C 'compon':88C,123C 'consum':52B 'consumpt':96C 'cve':11A,14A 'discov':67C 'disrupt':59B 'exhaust':9A 'expos':33B 'file':84C 'flaw':5A,41B,64C 'function':80C 'gateway':19B 'grok':34B 'grok2api':1A,23B,28B,70C 'handler':47B 'host':26B 'identifi':113C 'issu':109C 'launch':101C 'let':6A,48B 'manipul':92C 'may':99C 'model':35B 'patch':111C 'proxi':4A,31B,46B,90C 'proxyvoicewebsocket':81C 'remot':7A,50B,102C 'resourc':10A,54B,95C 'result':93C 'secur':63C 'self':25B 'self-host':24B 'server':53B 'servic':61B 'slow':57B 'suggest':118C 'tool':22B 'upgrad':103C,120C 'version':105C 'voic':3A,45B 'vulner':77C 'websocket':2A,27B,44B,89C","nicknames":[],"mitigations":[],"who_affected":"Teams that run grok2api, including self-hosted instances, are exposed if the voice WebSocket endpoint is reachable from the network. The flaw is in the voice proxy path, so deployments that do not serve voice traffic are less exposed. Whether an account is needed is unknown from the sources.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["aigateway","aitooling","grok2api","medium","selfhosted","websocket"],"campaign_type":null,"search_a":"'-123748':13A,16A '-2026':12A,15A 'attack':8A 'cve':11A,14A 'exhaust':9A 'flaw':5A 'grok2api':1A 'let':6A 'proxi':4A 'remot':7A 'resourc':10A 'voic':3A 'websocket':2A","search_b":"'access':36B 'ai':18B,21B 'ai-gateway':17B 'ai-tool':20B 'api':39B 'caller':51B 'consum':52B 'disrupt':59B 'expos':33B 'flaw':41B 'gateway':19B 'grok':34B 'grok2api':23B,28B 'handler':47B 'host':26B 'let':48B 'model':35B 'proxi':31B,46B 'remot':50B 'resourc':54B 'self':25B 'self-host':24B 'server':53B 'servic':61B 'slow':57B 'tool':22B 'voic':45B 'websocket':27B,44B","search_c":"'3.1.6':73C '3.1.7':106C '7ad0f791f0a9eb5a0ddfe38ac4dfcef01e19a6d4':115C 'address':107C 'affect':74C,122C 'attack':98C 'backend/internal/transport/http/inference/voice_ws_handler.go':85C 'chenym':69C 'compon':88C,123C 'consumpt':96C 'discov':67C 'file':84C 'flaw':64C 'function':80C 'grok2api':70C 'identifi':113C 'issu':109C 'launch':101C 'manipul':92C 'may':99C 'patch':111C 'proxi':90C 'proxyvoicewebsocket':81C 'remot':102C 'resourc':95C 'result':93C 'secur':63C 'suggest':118C 'upgrad':103C,120C 'version':105C 'vulner':77C 'websocket':89C","first_public_at":"2026-11-06T18:18:04+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"cna@vuldb.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-123748","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123748","severity":null,"published_at":"2026-11-06T18:18:04+00:00","modified_at":"2026-11-06T18:18:04+00:00","first_seen_at":"2026-11-06T18:44:08+00:00","fetched_at":"2026-11-06T18:44:08+00:00","note":null}],"documents":[{"id":88842,"url":"https://github.com/chenyme/grok2api/commit/7ad0f791f0a9eb5a0ddfe38ac4dfcef01e19a6d4","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":88843,"url":"https://github.com/chenyme/grok2api/releases/tag/v3.1.7","title":"Release notes: github.com","kind":"release","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Release notes: github.com"}],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}