{"id":"CVE-2026-121936","kind":"vulnerability","aliases":["CVE-2026-121936"],"related":[],"title":"easyVoice: unauthenticated request forgery reaches internal services via TTS endpoint","description":"easyVoice before 0.0.23 contains a server-side request forgery vulnerability that allows unauthenticated attackers to make the server send POST requests by supplying openaiBaseUrl with useLLM enabled. Attackers can target loopback and internal services through /api/v1/tts endpoints, using reflected error messages in the x-generate-tts-warning header to probe internal hosts and ports.","summary":"easyVoice before 0.0.23 lets an unauthenticated caller supply an openaiBaseUrl when useLLM is enabled, making the server send POST requests to attacker-chosen addresses. The reflected error text in the x-generate-tts-warning header lets an attacker probe loopback and internal hosts and ports.","severity":"medium","cvss":6.9,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["easyvoice","node","package","self-hosted"],"not_affected_if":["default-config","no-network-endpoint"],"how_to_check":"- Check the installed easyVoice version with `npm ls easyvoice` or the package.json dependency.\n- Look for `useLLM` enabled and an `openaiBaseUrl` accepted from request input on the /api/v1/tts endpoints.","fix":"- easyVoice: move to `0.0.23` or later.","status":"open","published_at":"2026-11-04T13:17:27+00:00","first_seen_at":"2026-11-04T13:27:01+00:00","triaged_at":"2026-11-04T13:28:04+00:00","updated_at":"2026-11-04T13:28:04+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-04T13:28:04Z","model":"claude-haiku-5-5","output":{"fix":"- easyVoice: move to `0.0.23` or later.","reach":"internet","title":"easyVoice: unauthenticated request forgery reaches internal services via TTS endpoint","impact":"medium","summary":"easyVoice before 0.0.23 lets an unauthenticated caller supply an openaiBaseUrl when useLLM is enabled, making the server send POST requests to attacker-chosen addresses. The reflected error text in the x-generate-tts-warning header lets an attacker probe loopback and internal hosts and ports.","audience":"developers","category":"package","nicknames":[],"who_cares":["easyvoice","node","self-hosted"],"confidence":0.6,"fix_status":"available","needs_auth":"no","worst_case":"server sends requests to internal services and leaks probe results","analyst_note":"","how_to_check":"- Check the installed easyVoice version with `npm ls easyvoice` or the package.json dependency.\n- Look for `useLLM` enabled and an `openaiBaseUrl` accepted from request input on the /api/v1/tts endpoints.","plain_action":"","needs_analyst":false,"not_affected_if":["default-config","no-network-endpoint"],"who_is_affected":"Teams running easyVoice as a server that accepts TTS requests with useLLM enabled are exposed, since the openaiBaseUrl value comes from the request. Deployments that keep useLLM off, or that run easyVoice only as a local library without a network-facing endpoint, are less exposed. Internal services reachable from the server host are the realistic targets.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"medium"},"cost_usd":0.000707,"input_tokens":4207,"output_tokens":573,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-121936':13A,16A '-2026':12A,15A '/api/v1/tts':106C '0.0.23':25B,72C 'address':47B 'allow':82C 'attack':45B,62B,84C,98C 'attacker-chosen':44B 'caller':29B 'chosen':46B 'contain':73C 'cve':11A,14A 'easyvoic':1A,17B,23B,70C 'enabl':36B,97C 'endpoint':10A,107C 'error':50B,110C 'forgeri':4A,79C 'generat':56B,116C 'header':59B,119C 'host':22B,67B,123C 'intern':6A,66B,103C,122C 'let':26B,60B 'loopback':64B,101C 'make':37B,86C 'messag':111C 'node':18B 'openaibaseurl':32B,94C 'packag':19B 'port':69B,125C 'post':41B,90C 'probe':63B,121C 'reach':5A 'reflect':49B,109C 'request':3A,42B,78C,91C 'self':21B 'self-host':20B 'send':40B,89C 'server':39B,76C,88C 'server-sid':75C 'servic':7A,104C 'side':77C 'suppli':30B,93C 'target':100C 'text':51B 'tts':9A,57B,117C 'unauthent':2A,28B,83C 'use':108C 'usellm':34B,96C 'via':8A 'vulner':80C 'warn':58B,118C 'x':55B,115C 'x-generate-tts-warn':54B,114C","nicknames":[],"mitigations":[],"who_affected":"Teams running easyVoice as a server that accepts TTS requests with useLLM enabled are exposed, since the openaiBaseUrl value comes from the request. Deployments that keep useLLM off, or that run easyVoice only as a local library without a network-facing endpoint, are less exposed. Internal services reachable from the server host are the realistic targets.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"developers","plain_action":null,"pkeys":[],"ptokens":[],"labels":["easyvoice","medium","node","package","selfhosted"],"campaign_type":null,"first_public_at":"2026-11-04T13:17:27+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/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":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121936","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121936","severity":null,"published_at":"2026-11-04T13:17:27+00:00","modified_at":"2026-11-04T13:17:27+00:00","first_seen_at":"2026-11-04T13:27:01+00:00","fetched_at":"2026-11-04T13:27:01+00:00","note":null}],"documents":[{"id":67067,"url":"https://github.com/cosin2077/easyVoice/commit/82fcb5b2f324c84b3f1808b29c6f44df16ccd42e","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":67068,"url":"https://github.com/cosin2077/easyVoice/releases/tag/v0.0.23","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"},{"id":67069,"url":"https://www.vulncheck.com/advisories/easyvoice-before-0.0.23-ssrf-via-openaibaseurl-in-tts-api","title":"Third-party advisory: www.vulncheck.com","kind":"advisory","source":"nvd","publisher":"research","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Third-party advisory: www.vulncheck.com"}],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}