{"id":"CVE-2026-129468","kind":"vulnerability","aliases":["CVE-2026-129468"],"related":[],"title":"dnsmgr: restricted users can read domains outside their permissions","description":"Netcccyun dnsmgr 2.18 before 2.22 contains a missing authorization vulnerability in POST /cloudflare/get_domain_default_line that allows restricted users to access domains outside their permissions. Restricted sub-users or single-domain logins can iterate the domain_id parameter to enumerate panel domain ids and read each domain's DNS line list and default line.","summary":"Netcccyun dnsmgr 2.18 before 2.22 has a missing authorization check on the POST /cloudflare/get_domain_default_line endpoint. A restricted sub-user or single-domain login can iterate the domain_id parameter to read DNS line lists and default lines for domains they should not see.","severity":"medium","cvss":5.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["dns","dnsmgr","other","self-hosted"],"not_affected_if":["no-restricted-users","single-admin-only"],"how_to_check":null,"fix":"- Move to `2.22` or later (the sources state 2.22 is the first fixed version).","status":"open","published_at":"2026-11-15T13:17:00+00:00","first_seen_at":"2026-11-15T13:36:04+00:00","triaged_at":"2026-11-15T13:36:19+00:00","updated_at":"2026-11-15T13:36:19+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-11-15T13:36:19Z","model":"claude-haiku-5-5","output":{"fix":"- Move to `2.22` or later (the sources state 2.22 is the first fixed version).","reach":"network","title":"dnsmgr: restricted users can read domains outside their permissions","impact":"low","summary":"Netcccyun dnsmgr 2.18 before 2.22 has a missing authorization check on the POST /cloudflare/get_domain_default_line endpoint. A restricted sub-user or single-domain login can iterate the domain_id parameter to read DNS line lists and default lines for domains they should not see.","audience":"businesses","category":"other","nicknames":[],"who_cares":["dnsmgr","self-hosted","dns"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"Restricted users read other domains' DNS line and default line data","analyst_note":"","how_to_check":"- Check the installed dnsmgr version; the sources name 2.18 through 2.21 as affected.\n- Review whether any sub-user or single-domain accounts exist in the panel.","plain_action":"","product_name":"","needs_analyst":false,"not_affected_if":["single-admin-only","no-restricted-users"],"who_is_affected":"Teams that run dnsmgr as a self-hosted DNS management panel and give restricted or single-domain logins to users. Installations without restricted users have little exposure to this read-only data leak.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"unknown"},"cost_usd":0.000712,"input_tokens":4615,"output_tokens":500,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-129468':12A,15A '-2026':11A,14A '/cloudflare/get_domain_default_line':35B,79C '2.18':24B,69C '2.22':26B,71C 'access':85C 'allow':81C 'author':30B,75C 'check':31B 'contain':72C 'cve':10A,13A 'default':59B,119C 'dns':16B,55B,115C 'dnsmgr':1A,17B,23B,68C 'domain':6A,45B,50B,62B,86C,97C,102C,108C,113C 'endpoint':36B 'enumer':106C 'host':21B 'id':51B,103C,109C 'iter':48B,100C 'line':56B,60B,116C,120C 'list':57B,117C 'login':46B,98C 'miss':29B,74C 'netcccyun':22B,67C 'outsid':7A,87C 'panel':107C 'paramet':52B,104C 'permiss':9A,89C 'post':34B,78C 'read':5A,54B,111C 'restrict':2A,38B,82C,90C 'see':66B 'self':20B 'self-host':19B 'singl':44B,96C 'single-domain':43B,95C 'sub':40B,92C 'sub-us':39B,91C 'user':3A,41B,83C,93C 'vulner':76C","nicknames":[],"mitigations":[],"who_affected":"Teams that run dnsmgr as a self-hosted DNS management panel and give restricted or single-domain logins to users. Installations without restricted users have little exposure to this read-only data leak.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["dns","dnsmgr","medium","other","selfhosted"],"campaign_type":null,"search_a":"'-129468':12A,15A '-2026':11A,14A 'cve':10A,13A 'dnsmgr':1A 'domain':6A 'outsid':7A 'permiss':9A 'read':5A 'restrict':2A 'user':3A","search_b":"'/cloudflare/get_domain_default_line':35B '2.18':24B '2.22':26B 'author':30B 'check':31B 'default':59B 'dns':16B,55B 'dnsmgr':17B,23B 'domain':45B,50B,62B 'endpoint':36B 'host':21B 'id':51B 'iter':48B 'line':56B,60B 'list':57B 'login':46B 'miss':29B 'netcccyun':22B 'paramet':52B 'post':34B 'read':54B 'restrict':38B 'see':66B 'self':20B 'self-host':19B 'singl':44B 'single-domain':43B 'sub':40B 'sub-us':39B 'user':41B","search_c":"'/cloudflare/get_domain_default_line':79C '2.18':69C '2.22':71C 'access':85C 'allow':81C 'author':75C 'contain':72C 'default':119C 'dns':115C 'dnsmgr':68C 'domain':86C,97C,102C,108C,113C 'enumer':106C 'id':103C,109C 'iter':100C 'line':116C,120C 'list':117C 'login':98C 'miss':74C 'netcccyun':67C 'outsid':87C 'panel':107C 'paramet':104C 'permiss':89C 'post':78C 'read':111C 'restrict':82C,90C 'singl':96C 'single-domain':95C 'sub':92C 'sub-us':91C 'user':83C,93C 'vulner':76C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-15T13:17:00+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/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-2026-129468","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-129468","severity":null,"published_at":"2026-11-15T13:17:00+00:00","modified_at":"2026-11-15T13:17:00+00:00","first_seen_at":"2026-11-15T13:36:04+00:00","fetched_at":"2026-11-15T13:36:04+00:00","note":null}],"documents":[{"id":163537,"url":"https://github.com/netcccyun/dnsmgr/commit/175468c6423c04a6b46e56663c37f090bef5381f","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":163538,"url":"https://www.vulncheck.com/advisories/netcccyun-dnsmgr-2.18-before-2.22-missing-authorization-via-get-domain-default-line","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"}],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}