{"id":"CVE-2026-121430","kind":"vulnerability","aliases":["CVE-2026-121430"],"related":[],"title":"AzuraCast: missing permission check lets users read and overwrite other stations' waveforms","description":"AzuraCast before 0.24.0 contains a missing authorization vulnerability in the GET and POST /api/station/{station_id}/waveform/{media_id} routes, which lack Permissions middleware. Any authenticated user without station assignment can read another station's cached waveform JSON and overwrite it with attacker-supplied data, corrupting Visual Cue Editor data.","summary":"AzuraCast before 0.24.0 has GET and POST routes for station waveform data that skip the permission check. Any logged-in user without a station assignment can read another station's cached waveform data and overwrite it with their own content, corrupting Visual Cue Editor data.","severity":"medium","cvss":5.4,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["azuracast","radio","runtime","self-hosted"],"not_affected_if":["single-trusted-user","version-0.24.0-or-later"],"how_to_check":"- Check the AzuraCast version in use; the sources say versions before `0.24.0` are affected.\n- Review the routes `/api/station/{station_id}/waveform/{media_id}` in the running install for the Permissions middleware (unknown if the sources give a specific file).","fix":"- Move AzuraCast to `0.24.0` or later, per the sources.","status":"open","published_at":"2026-11-03T15:17:33+00:00","first_seen_at":"2026-11-03T15:21:59+00:00","triaged_at":"2026-11-03T15:23:27+00:00","updated_at":"2026-11-03T15:23:27+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-11-03T15:23:27Z","model":"claude-haiku-5-5","output":{"fix":"- Move AzuraCast to `0.24.0` or later, per the sources.","reach":"network","title":"AzuraCast: missing permission check lets users read and overwrite other stations' waveforms","impact":"medium","summary":"AzuraCast before 0.24.0 has GET and POST routes for station waveform data that skip the permission check. Any logged-in user without a station assignment can read another station's cached waveform data and overwrite it with their own content, corrupting Visual Cue Editor data.","audience":"businesses","category":"runtime","nicknames":[],"who_cares":["azuracast","self-hosted","radio"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"Other stations' waveform data is read and overwritten by any logged-in user","analyst_note":"","how_to_check":"- Check the AzuraCast version in use; the sources say versions before `0.24.0` are affected.\n- Review the routes `/api/station/{station_id}/waveform/{media_id}` in the running install for the Permissions middleware (unknown if the sources give a specific file).","plain_action":"","needs_analyst":false,"not_affected_if":["version-0.24.0-or-later","single-trusted-user"],"who_is_affected":"Teams running AzuraCast, a self-hosted radio station platform, before 0.24.0 where more than one user account exists. Users assigned to a station are not the attack path; any authenticated user without a station assignment is. Installs with only trusted, station-assigned accounts have less exposure.","user_interaction":"no","needs_special_setup":"no","severity_if_unknown":"medium"},"cost_usd":0.000698,"input_tokens":4186,"output_tokens":559,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-121430':15A,18A '-2026':14A,17A '/api/station':84C '/waveform':87C '0.24.0':27B,73C 'anoth':53B,103C 'assign':50B,100C 'attack':114C 'attacker-suppli':113C 'authent':96C 'author':77C 'azuracast':1A,19B,25B,71C 'cach':56B,106C 'check':4A,41B 'contain':74C 'content':65B 'corrupt':66B,117C 'cue':68B,119C 'cve':13A,16A 'data':36B,58B,70B,116C,121C 'editor':69B,120C 'get':29B,81C 'host':24B 'id':86C,89C 'json':108C 'lack':92C 'let':5A 'log':44B 'logged-in':43B 'media':88C 'middlewar':94C 'miss':2A,76C 'overwrit':9A,60B,110C 'permiss':3A,40B,93C 'post':31B,83C 'radio':20B 'read':7A,52B,102C 'rout':32B,90C 'runtim':21B 'self':23B 'self-host':22B 'skip':38B 'station':11A,34B,49B,54B,85C,99C,104C 'suppli':115C 'user':6A,46B,97C 'visual':67B,118C 'vulner':78C 'waveform':12A,35B,57B,107C 'without':47B,98C","nicknames":[],"mitigations":[],"who_affected":"Teams running AzuraCast, a self-hosted radio station platform, before 0.24.0 where more than one user account exists. Users assigned to a station are not the attack path; any authenticated user without a station assignment is. Installs with only trusted, station-assigned accounts have less exposure.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["azuracast","medium","radio","runtime","selfhosted"],"first_public_at":"2026-10-18T16:23:36+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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-2026-121430","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121430","severity":null,"published_at":"2026-11-03T15:17:33+00:00","modified_at":"2026-11-03T15:17:34+00:00","first_seen_at":"2026-11-03T15:21:59+00:00","fetched_at":"2026-11-03T15:21:59+00:00","note":null}],"documents":[{"id":58385,"url":"https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-q3x9-qgv6-hgq3","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-10-18T16:23:36+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":58386,"url":"https://www.vulncheck.com/advisories/azuracast-before-0.24.0-missing-authorization-via-station-waveform-endpoints","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"}