Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-53514— Better Auth: Unauthorized invitation acceptance via unverified email match in organization plugin

Quick assessment

Affected
better-auth better-auth
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Better Auth是Better Auth团队开源的一个 TypeScript 最全面的身份验证框架。 Better Auth 1.6.11之前版本存在安全漏洞，该漏洞源于组织插件的接受邀请、拒绝邀请、获取邀请和列出用户邀请接收者端点使用 session.user.email 和邀请ID，但未充分验证邮件所有权，允许用户使用未经验证的会话在获取邀请ID后接受组织邀请。

CVSS 7.7 · High EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1136 · Create Account

Affected Version Matrix 1

VendorProduct Version RangeStatus
better-auth better-auth < 1.6.11 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-53514

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Better Auth: Unauthorized invitation acceptance via unverified email match in organization plugin
Source: CVE Program / CVE List V5
Vulnerability Description
Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, and in 1.6.14 and later when invitation IDs can be obtained outside the invited mailbox and requireEmailVerificationOnInvitation: true is not enabled, the organization plugin's acceptInvitation, rejectInvitation, getInvitation, and listUserInvitations recipient endpoints use session.user.email and an invitation ID without sufficient verified-email ownership proof, allowing a user with an unverified session for the invited email address to accept an organization invitation after obtaining the invitation ID. This issue is fixed for the original default behavior in version 1.6.11, while 1.6.14 restored compatibility for built-in opaque invitation IDs and leaves affected configurations requiring secure options.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Better Auth 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Better Auth是Better Auth团队开源的一个 TypeScript 最全面的身份验证框架。 Better Auth 1.6.11之前版本存在安全漏洞，该漏洞源于组织插件的接受邀请、拒绝邀请、获取邀请和列出用户邀请接收者端点使用 session.user.email 和邀请ID，但未充分验证邮件所有权，允许用户使用未经验证的会话在获取邀请ID后接受组织邀请。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
better-auth better-auth < 1.6.11 -

II. Public POCs for CVE-2026-53514

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6533 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-53514

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-53514 (2)

Vendor Advisories for CVE-2026-53514 (1)

Vendor Pages for CVE-2026-53514 (1)

Same Patch Batch · better-auth · 2026-07-15 · 8 CVEs total

CVE-2026-53513 9.6 CRITICAL Better Auth: Server-side request forgery via unvalidated OIDC endpoints on @better-auth/ss
CVE-2026-53516 8.3 HIGH Better Auth: Account takeover via OAuth auto-link to unverified pre-registered email
CVE-2026-53517 8.1 HIGH Better Auth OAuth Provider: Refresh Token Rotation Race Condition Allows Concurrent Replay
CVE-2026-45337 7.6 HIGH Better Auth: Device authorization approve and deny accept any authenticated session while
CVE-2026-53515 7.1 HIGH Better Auth: Privilege escalation via SSO provider registration: missing admin role check
CVE-2026-53518 Better Auth OAuth Provider: Race Condition in Authorization Code Exchange Enables Multi-Us
CVE-2026-53512 Better Auth: OAuth refresh-token replay via missing client authentication on oidc-provider

IV. Related Vulnerabilities

Same product: better-auth
Same vendor: better-auth
Same weakness: CWE-287

V. Comments for CVE-2026-53514

No comments yet

Leave a comment