{"id":"CVE-2024-29296","kind":"vulnerability","aliases":["CVE-2024-29296","GHSA-87x6-8m9v-g8c2","GO-2026-6619"],"related":[],"title":"Portainer CE allows username enumeration through authentication response timing in github.com/portainer/portainer","description":"A user enumeration vulnerability was found in Portainer CE 2.19.4. This issue occurs during user authentication process, where a difference in response time could allow a remote unauthenticated user to determine if a username is valid or not.","summary":"Portainer CE's login endpoint responds at a measurably different speed for valid and invalid usernames. An unauthenticated remote attacker can use that timing difference to find which usernames exist, which helps them target password guessing.","severity":"medium","cvss":5.3,"epss":0.01252,"exploited":false,"exploited_at":null,"products":[{"name":"github.com/portainer/portainer","fixed":["0.6.1-0.20240417040827-48bc7d0d92f0"],"affected":"< 0.6.1-0.20240417040827-48bc7d0d92f0","ecosystem":"go"}],"ecosystems":["go"],"tags":["go","package","portainer","self-hosted"],"not_affected_if":["auth-required"],"how_to_check":null,"fix":"Upgrade the github.com/portainer/portainer module to 0.6.1-0.20240417040827-48bc7d0d92f0 or later, or upgrade Portainer CE past 2.19.4 (the sources do not name the exact Portainer CE release).","status":"open","published_at":"2024-04-10T15:16:05+00:00","first_seen_at":"2026-10-23T19:13:08+00:00","triaged_at":"2026-10-23T21:49:02+00:00","updated_at":"2026-10-23T21:49:02+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-23T21:49:02Z","model":"claude-haiku-5-5","output":{"fix":"Upgrade the github.com/portainer/portainer module to 0.6.1-0.20240417040827-48bc7d0d92f0 or later, or upgrade Portainer CE past 2.19.4 (the sources do not name the exact Portainer CE release).","reach":"internet","impact":"low","summary":"Portainer CE's login endpoint responds at a measurably different speed for valid and invalid usernames. An unauthenticated remote attacker can use that timing difference to find which usernames exist, which helps them target password guessing.","category":"package","who_cares":["portainer","go","self-hosted"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker learns which usernames exist, aiding password guessing attacks","analyst_note":"","how_to_check":"unknown","needs_analyst":false,"not_affected_if":["auth-required"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.00046,"input_tokens":2923,"output_tokens":335,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2024':15A,26A '-2026':23A '-29296':16A,27A '-6619':24A '/portainer/portainer':13A,30A '2.19.4':82C '87x6':19A '8m9v':20A 'allow':3A,97C 'attack':56B 'authent':7A,88C 'ce':2A,38B,81C 'could':96C 'cve':14A,25A 'determin':103C 'differ':46B,61B,92C 'endpoint':41B 'enumer':5A,75C 'exist':66B 'find':63B 'found':78C 'g8c2':21A 'ghsa':18A 'ghsa-87x6-8m9v-g8c2':17A 'github.com':12A,29A 'github.com/portainer/portainer':11A,28A 'go':22A,31B 'guess':72B 'help':68B 'host':36B 'invalid':51B 'issu':84C 'login':40B 'measur':45B 'occur':85C 'packag':32B 'password':71B 'portain':1A,33B,37B,80C 'process':89C 'remot':55B,99C 'respond':42B 'respons':8A,94C 'self':35B 'self-host':34B 'speed':47B 'target':70B 'time':9A,60B,95C 'unauthent':54B,100C 'use':58B 'user':74C,87C,101C 'usernam':4A,52B,65B,106C 'valid':49B,108C 'vulner':76C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2024-04-10T15:16:05+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cvss_by":"134c704f-9b21-4f2e-91b3-4a467353bcc0","poc_count":0,"sources":[{"source":"govuln","external_id":"GO-2026-6619","url":"https://pkg.go.dev/vuln/GO-2026-6619","severity":null,"published_at":"2026-10-01T20:24:05+00:00","modified_at":"2026-10-01T20:24:05+00:00","first_seen_at":"2026-10-23T19:13:08+00:00","fetched_at":"2026-10-23T19:13:08+00:00","note":null},{"source":"epss","external_id":"CVE-2024-29296","url":"https://api.first.org/data/v1/epss?cve=CVE-2024-29296","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-23T19:13:43+00:00","fetched_at":"2026-10-23T19:13:43+00:00","note":null},{"source":"nvd","external_id":"CVE-2024-29296","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-29296","severity":null,"published_at":"2024-04-10T15:16:05+00:00","modified_at":"2026-07-09T01:18:59+00:00","first_seen_at":"2026-10-23T19:35:23+00:00","fetched_at":"2026-10-23T19:35:23+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}