{"id":"CVE-2026-122019","kind":"vulnerability","aliases":["CVE-2026-122019"],"related":[],"title":"6valley 16.0: social login flaw lets attackers bypass authorization remotely","description":"A vulnerability was identified in 6amTech 6valley 16.0. Impacted is the function existingAccountCheck of the file /api/v1/auth/existing-account-check of the component Social Login Flow. Such manipulation of the argument user_response leads to authorization bypass. The attack may be launched remotely. The exploit is publicly available and might be used.","summary":"A flaw in the Social Login flow of 6amTech 6valley 16.0 lets a remote attacker manipulate the user_response argument of the existing-account-check endpoint. The attacker can bypass authorization, and a public exploit exists.","severity":"high","cvss":7.5,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"6valley","fixed":[],"affected":"16.0","ecosystem":"vendor"}],"ecosystems":[],"tags":["6valley","other","php","self-hosted","social-login"],"not_affected_if":["social-login-disabled"],"how_to_check":"Check whether your 6amTech 6valley install is version 16.0 (admin panel footer or version file) and whether Social Login is enabled (Admin Panel > System Settings > 3rd Party > Social Media Login). Look in web logs for requests to /api/v1/auth/existing-account-check with unusual user_response values. Other versions: unknown, the CNA record names only 16.0.","fix":null,"status":"open","published_at":"2026-11-04T22:17:55+00:00","first_seen_at":"2026-11-04T23:08:48+00:00","triaged_at":"2026-11-04T23:09:52+00:00","updated_at":"2026-11-04T23:11:46+00:00","category":"other","confidence":0.4,"triage":{"at":"2026-11-04T23:09:52Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"internet","title":"6valley 16.0: social login flaw lets attackers bypass authorization remotely","impact":"high","summary":"A flaw in the Social Login flow of 6amTech 6valley 16.0 lets a remote attacker manipulate the user_response argument of the existing-account-check endpoint. The attacker can bypass authorization, and a public exploit exists.","audience":"businesses","category":"other","nicknames":[],"who_cares":["6valley","social-login","php","self-hosted"],"confidence":0.5,"fix_status":"unknown","needs_auth":"no","worst_case":"attacker bypasses authorization on the login endpoint remotely","analyst_note":"Confirm affected version range and fixed version at https://nvd.nist.gov/vuln/detail/CVE-2026-122019; the sources give no fix or check.","how_to_check":"- unknown","plain_action":"","needs_analyst":true,"not_affected_if":["social-login-disabled"],"who_is_affected":"Teams running 6amTech 6valley 16.0 with the Social Login flow enabled are exposed through the /api/v1/auth/existing-account-check endpoint. Installations without Social Login, or on other versions, are not covered by this entry. The sources do not say whether other versions are affected.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"high"},"cost_usd":0.000665,"input_tokens":4226,"output_tokens":484,"severity_before":"high"},"analyst_status":"done","analyst_note":"Confirm affected version range and fixed version at https://nvd.nist.gov/vuln/detail/CVE-2026-122019; the sources give no fix or check.","search":"'-122019':13A,16A '-2026':12A,15A '/api/v1/auth/existing-account-check':80C '16.0':2A,37B,71C '6amtech':35B,69C '6valley':1A,17A,18B,36B,70C 'account':51B 'argument':46B,91C 'attack':7A,41B,55B,99C 'author':9A,58B,96C 'avail':108C 'bypass':8A,57B,97C 'check':52B 'compon':83C 'cve':11A,14A 'endpoint':53B 'exist':50B,63B 'existing-account-check':49B 'existingaccountcheck':76C 'exploit':62B,105C 'file':79C 'flaw':5A,28B 'flow':33B,86C 'function':75C 'host':23B 'identifi':67C 'impact':72C 'launch':102C 'lead':94C 'let':6A,38B 'login':4A,26B,32B,85C 'manipul':42B,88C 'may':100C 'might':110C 'php':20B 'public':61B,107C 'remot':10A,40B,103C 'respons':45B,93C 'self':22B 'self-host':21B 'social':3A,25B,31B,84C 'social-login':24B 'use':112C 'user':44B,92C 'vulner':65C","nicknames":[],"mitigations":[],"who_affected":"Teams running 6amTech 6valley 16.0 with the Social Login flow enabled are exposed through the /api/v1/auth/existing-account-check endpoint. Installations without Social Login, or on other versions, are not covered by this entry. The sources do not say whether other versions are affected.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["6valley"],"ptokens":["6valley"],"labels":["6valley","high","other","php","selfhosted","sociallogin"],"campaign_type":null,"first_public_at":"2026-11-04T22:17:55+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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":"cna@vuldb.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-122019","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-122019","severity":null,"published_at":"2026-11-04T22:17:55+00:00","modified_at":"2026-11-04T22:17:56+00:00","first_seen_at":"2026-11-04T23:08:48+00:00","fetched_at":"2026-11-04T23:08:48+00:00","note":null},{"source":"analyst","external_id":"CVE-2026-122019:1730","url":"https://radar.offseq.com/threat/cve-2026-122019-authorization-bypass-in-6amtech-6valley-ebc0fef02b84c603","severity":null,"published_at":"2026-11-04T23:11:46+00:00","modified_at":"2026-11-04T23:11:46+00:00","first_seen_at":"2026-11-04T23:11:46+00:00","fetched_at":"2026-11-04T23:11:46+00:00","note":"No vendor/maintainer advisory or fix found; NVD page returned no content, only CNA (VulDB) text via OffSeq/HOL rewrites. Affected 16.0 only per CNA; fix unknown, no vendor page to support fix-status none. CVSS 3.1 7.3 / 4.0 6.9 (VulDB). PoC claimed public but no link found. Nothing verified. Revisit when VulDB entry or 6amTech release notes appear.","cites":["https://radar.offseq.com/threat/cve-2026-122019-authorization-bypass-in-6amtech-6valley-ebc0fef02b84c603"]}],"documents":[{"id":71248,"url":"https://radar.offseq.com/threat/cve-2026-122019-authorization-bypass-in-6amtech-6valley-ebc0fef02b84c603","title":"OffSeq Threat Radar: CVE-2026-122019","kind":"other","source":"analyst","publisher":null,"text":null,"published_at":null,"relation":"mentions","confidence":null,"note":null}],"exploit_sources":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}