{"id":"CVE-2026-125758","kind":"vulnerability","aliases":["CVE-2026-125758"],"related":[],"title":"Aptabase: forged sign-in links let attackers take over any account","description":"Aptabase before commit 61d4c01 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge sign-in links by using the publicly known example AUTH_SECRET. Attackers can enumerate registered e-mails via /api/_auth/signin, forge HS256 JWTs redeemed by /api/_auth/continue, impersonate users, export analytics data, and transfer app ownership.","summary":"Aptabase before commit 61d4c01 accepts sign-in tokens signed with the publicly known example AUTH_SECRET, so anyone can forge login links. An attacker can impersonate users, export analytics data and transfer app ownership.","severity":"critical","cvss":9.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["analytics","aptabase","package","self-hosted"],"not_affected_if":["managed-hosting","unique-auth-secret"],"how_to_check":"- Check whether the deployed `AUTH_SECRET` is still the example value from the project's sample configuration.\n- Check the deployed commit against `61d4c01`; anything older is listed as affected.","fix":"- Move to a commit at or after `61d4c01` (the fixed commit named in the description).\n- Replace the example `AUTH_SECRET` with a newly generated secret.","status":"open","published_at":"2026-11-10T16:17:23+00:00","first_seen_at":"2026-11-10T16:22:35+00:00","triaged_at":"2026-11-10T16:23:20+00:00","updated_at":"2026-11-10T16:23:20+00:00","category":"package","confidence":0.8,"triage":{"at":"2026-11-10T16:23:20Z","model":"claude-haiku-5-5","output":{"fix":"- Move to a commit at or after `61d4c01` (the fixed commit named in the description).\n- Replace the example `AUTH_SECRET` with a newly generated secret.","reach":"internet","title":"Aptabase: forged sign-in links let attackers take over any account","impact":"high","summary":"Aptabase before commit 61d4c01 accepts sign-in tokens signed with the publicly known example AUTH_SECRET, so anyone can forge login links. An attacker can impersonate users, export analytics data and transfer app ownership.","audience":"businesses","category":"package","nicknames":[],"who_cares":["aptabase","self-hosted","analytics"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Attackers forge logins, read analytics and take over app ownership.","analyst_note":"Confirm the fixed commit and whether the sample AUTH_SECRET is the only trigger; check the linked GitHub patch and vulncheck advisory for exact version scope.","how_to_check":"- Check whether the deployed `AUTH_SECRET` is still the example value from the project's sample configuration.\n- Check the deployed commit against `61d4c01`; anything older is listed as affected.","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["managed-hosting","unique-auth-secret"],"who_is_affected":"Self-hosted Aptabase instances that run a commit before 61d4c01 and use the publicly known example AUTH_SECRET are exposed, since forged JWTs are accepted by the sign-in continuation endpoint. Instances on the fixed commit with a unique secret are not described as affected by the sources.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"yes","severity_if_unknown":"critical"},"cost_usd":0.00078,"input_tokens":4662,"output_tokens":627,"severity_before":"critical"},"analyst_status":null,"analyst_note":null,"search":"'-125758':15A,18A '-2026':14A,17A '/api/_auth/continue':101C '/api/_auth/signin':95C '61d4c01':28B,63C 'accept':29B 'account':12A 'allow':70C 'analyt':19B,54B,105C 'anyon':43B 'app':58B,109C 'aptabas':1A,20B,25B,60C 'attack':8A,49B,72C,87C 'auth':40B,85C 'authent':66C 'bypass':67C 'commit':27B,62C 'contain':64C 'cve':13A,16A 'data':55B,106C 'e':92C 'e-mail':91C 'enumer':89C 'exampl':39B,84C 'export':53B,104C 'forg':2A,45B,74C,96C 'host':24B 'hs256':97C 'imperson':51B,102C 'jwts':98C 'known':38B,83C 'let':7A 'link':6A,47B,78C 'login':46B 'mail':93C 'ownership':59B,110C 'packag':21B 'public':37B,82C 'redeem':99C 'regist':90C 'secret':41B,86C 'self':23B 'self-host':22B 'sign':4A,31B,34B,76C 'sign-in':3A,30B,75C 'take':9A 'token':33B 'transfer':57B,108C 'unauthent':71C 'use':80C 'user':52B,103C 'via':94C 'vulner':68C","nicknames":[],"mitigations":[],"who_affected":"Self-hosted Aptabase instances that run a commit before 61d4c01 and use the publicly known example AUTH_SECRET are exposed, since forged JWTs are accepted by the sign-in continuation endpoint. Instances on the fixed commit with a unique secret are not described as affected by the sources.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["analytics","aptabase","critical","package","selfhosted"],"campaign_type":null,"search_a":"'-125758':15A,18A '-2026':14A,17A 'account':12A 'aptabas':1A 'attack':8A 'cve':13A,16A 'forg':2A 'let':7A 'link':6A 'sign':4A 'sign-in':3A 'take':9A","search_b":"'61d4c01':28B 'accept':29B 'analyt':19B,54B 'anyon':43B 'app':58B 'aptabas':20B,25B 'attack':49B 'auth':40B 'commit':27B 'data':55B 'exampl':39B 'export':53B 'forg':45B 'host':24B 'imperson':51B 'known':38B 'link':47B 'login':46B 'ownership':59B 'packag':21B 'public':37B 'secret':41B 'self':23B 'self-host':22B 'sign':31B,34B 'sign-in':30B 'token':33B 'transfer':57B 'user':52B","search_c":"'/api/_auth/continue':101C '/api/_auth/signin':95C '61d4c01':63C 'allow':70C 'analyt':105C 'app':109C 'aptabas':60C 'attack':72C,87C 'auth':85C 'authent':66C 'bypass':67C 'commit':62C 'contain':64C 'data':106C 'e':92C 'e-mail':91C 'enumer':89C 'exampl':84C 'export':104C 'forg':74C,96C 'hs256':97C 'imperson':102C 'jwts':98C 'known':83C 'link':78C 'mail':93C 'ownership':110C 'public':82C 'redeem':99C 'regist':90C 'secret':86C 'sign':76C 'sign-in':75C 'transfer':108C 'unauthent':71C 'use':80C 'user':103C 'via':94C 'vulner':68C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-06T09:03:16+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/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-2026-125758","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-125758","severity":null,"published_at":"2026-11-10T16:17:23+00:00","modified_at":"2026-11-10T16:17:23+00:00","first_seen_at":"2026-11-10T16:22:35+00:00","fetched_at":"2026-11-10T16:22:35+00:00","note":null}],"documents":[{"id":116139,"url":"https://github.com/aptabase/aptabase/commit/61d4c01298a706d575265461ac07bb956ca7b8d2","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":116140,"url":"https://github.com/aptabase/aptabase/security/advisories/GHSA-gc76-cqm4-vqcf","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-11-06T09:03:16+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":116141,"url":"https://github.com/aptabase/self-hosting/commit/b79a472419ff17e485d0bd5b4adf1b1ef2b9953c","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":116142,"url":"https://www.vulncheck.com/advisories/aptabase-before-commit-61d4c01-authentication-bypass-via-known-example-auth-secret","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"}