Lago 1.55.0 版身份驗證繞過漏洞 CVE-2026-119420 影響組織管理員
CVE-2026-119420 - Lago through 1.55.0 Authentication Bypass via acceptInvite GraphQL Mutation
Lago 1.55.0 發布的身份驗證繞過漏洞 CVE-2026-119420 允許攻擊者取得 JWT，進而存取組織資料。
- 漏洞概述：Lago 1.55.0 允許組織管理員透過 acceptInvite GraphQL mutation 取得 JWT，無需密碼驗證。
此公告揭示 Lago 1.55.0 的身份驗證缺口，提示使用者即時升級以避免未授權存取；若未升級，攻擊者可竊取帳號、API 金鑰與付款資訊。
Lago through 1.55.0 contains an authentication bypass vulnerability that allows organization administrators to obtain session tokens for existing accounts via the acceptInvite mutation without a password check. Attackers can invite a victim's email, accept with an arbitrary password, and receive a JWT to access the victim's organizations, billing data, API keys and payment integrations.
Impact
Affected Products
The following products are affected by CVE-2026-119420
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Update Lago to the latest version to fix an authentication bypass vulnerability.
- Update Lago to version 1.55.1 or later.
- Apply vendor-provided security patches.
- Review and secure all authentication mechanisms.
- Monitor for unauthorized access.
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-119420.
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-119420 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-119420
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-119420 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-119420 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
十月. 30, 2026
Action Type Old Value New Value Added Description Lago through 1.55.0 contains an authentication bypass vulnerability that allows organization administrators to obtain session tokens for existing accounts via the acceptInvite mutation without a password check. Attackers can invite a victim's email, accept with an arbitrary password, and receive a JWT to access the victim's organizations, billing data, API keys and payment integrations. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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 Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-288 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/119xxx/CVE-2026-119420.json">CVE-2026-119420</a> Added Reference https://abraxaslabs.tech/research/lago-invite-ato Added Reference https://github.com/getlago/lago-api Added Reference https://github.com/getlago/lago-api/blob/v1.55.0/app/services/invites/accept_service.rb#L15-L16 Added Reference https://github.com/getlago/lago-api/blob/v1.55.0/app/services/users_service.rb#L89-L98 Added Reference https://github.com/getlago/lago-api/commit/5a9d5935b027d1db7171c7c015283d5870451305 Added Reference https://github.com/getlago/lago-api/pull/6146 Added Reference https://www.vulncheck.com/advisories/lago-through-1.55.0-authentication-bypass-via-acceptinvite-graphql-mutation
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.