CVE-2025-27143: URL Redirection to Untrusted Site

Better Auth is an authentication and authorization library for TypeScript. Prior to version 1.1.21, the application is vulnerable to an open redirect due to improper validation of the callbackURL parameter in the email verification endpoint and any other endpoint that accepts callback url. While...

The vulnerability of the TypeScript-based authentication library Better Auth, related to the lack of protective measures for website structure, allows attackers to perform cross-site scripting attacks.

The vulnerability of the TypeScript-based authentication library Better Auth relates to the lack of measures taken to protect the website structure when processing the error parameter. Exploiting this vulnerability allows a malicious actor to perform cross-site scripting attacks remotely...

Reflected Cross-Site Scripting (Reflected XSS)

Better-auth is vulnerable to Reflected cross-site scripting XSS. The vulnerability is due to HTML injection due to improper handling of user input on the /api/auth/error page, allowing an attacker to execute arbitrary JavaScript in a victim’s browser...

@better-auth/cli (>=0.0.1, <=1.1.15), @vxrn/better-auth (>=1.1.368, <=1.1.416) +2 more potentially affected by CVE-2025-71404 via better-auth (>=0.4.9, <=1.1.15-beta.7)

better-auth NPM version =0.4.9, =0.0.1, =1.1.368, =1.1.0, =1.1.2 - better-auth-monitor 1.0.0 Source cves: CVE-2025-71404 Source advisory: OSV:GHSA-9X4V-XFQ5-M8X5...

Better Auth URL parameter HTML Injection (Reflected Cross-Site scripting)

Summary The better-auth /api/auth/error page was vulnerable to HTML injection, resulting in a reflected cross-site scripting XSS vulnerability. Details The value of error URL parameter was reflected as HTML on the error page:...

GHSA-9X4V-XFQ5-M8X5 Better Auth URL parameter HTML Injection (Reflected Cross-Site scripting)

Summary The better-auth /api/auth/error page was vulnerable to HTML injection, resulting in a reflected cross-site scripting XSS vulnerability. Details The value of error URL parameter was reflected as HTML on the error page:...

PT-2025-5821

Name of the Vulnerable Software and Affected Versions: better-auth affected versions not specified Description: The better-auth /api/auth/error page is vulnerable to HTML injection, resulting in a reflected cross-site scripting XSS issue. The error URL parameter's value is reflected as HTML on th...

PT-2025-62898

Name of the Vulnerable Software and Affected Versions better-auth versions 0.0.3 through 1.1.15 Description A reflected cross-site scripting XSS issue exists on the '/api/auth/error' endpoint. The application reflects the value of the error URL parameter as HTML without proper neutralization,...

PT-2025-30556

Уязвимость библиотеки аутентификации на языке TypeScript Better Auth связана с непринятием мер по защите структуры веб-страницы при обработке параметра error. Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, проводить межсайтовые сценарные атаки...

@better-auth/cli (>=1.0.0-canary.2, <=1.1.5), @vxrn/better-auth (>=1.1.368, <=1.1.416) potentially affected by CVE-2024-56734 +1 more via better-auth (>=1.0.0, <=1.1.5)

better-auth NPM version =1.0.0, =1.0.0-canary.2, =1.1.368, =1.1.416 Source cves: CVE-2024-56734, CVE-2025-27143 Source advisory: OSV:GHSA-8JHW-6PJJ-8723...

GHSA-8JHW-6PJJ-8723 Better Auth has an Open Redirect Vulnerability in Verify Email Endpoint

Summary An open redirect vulnerability has been identified in the verify email endpoint of Better Auth, potentially allowing attackers to redirect users to malicious websites. This issue affects users relying on email verification links generated by the library. Affected Versions - All versions...

CVE-2024-56734

Better Auth is an authentication library for TypeScript. An open redirect vulnerability has been identified in the verify email endpoint of all versions of Better Auth prior to v1.1.6, potentially allowing attackers to redirect users to malicious websites. This issue affects users relying on emai...

CVE-2024-56734 Better Auth has an Open Redirect Vulnerability in Verify Email Endpoint

Better Auth is an authentication library for TypeScript. An open redirect vulnerability has been identified in the verify email endpoint of all versions of Better Auth prior to v1.1.6, potentially allowing attackers to redirect users to malicious websites. This issue affects users relying on emai...

CVE-2024-56734 Better Auth has an Open Redirect Vulnerability in Verify Email Endpoint

Better Auth is an authentication library for TypeScript. An open redirect vulnerability has been identified in the verify email endpoint of all versions of Better Auth prior to v1.1.6, potentially allowing attackers to redirect users to malicious websites. This issue affects users relying on emai...

CVE-2024-56734

CVE-2024-56734 affects Better Auth (TypeScript) prior to version 1.1.6, where the verify-email endpoint accepts a callbackURL parameter and uses JWT without proper domain validation. This open-redirect flaw can allow an attacker to redirect users to arbitrary, attacker-controlled sites. Root caus...

CVE-2024-56734 Better Auth has an Open Redirect Vulnerability in Verify Email Endpoint

Better Auth is an authentication library for TypeScript. An open redirect vulnerability has been identified in the verify email endpoint of all versions of Better Auth prior to v1.1.6, potentially allowing attackers to redirect users to malicious websites. This issue affects users relying on emai...

PT-2025-7795 · Unknown · Better Auth

Name of the Vulnerable Software and Affected Versions: Better Auth versions prior to 1.1.21 Description: The application is vulnerable to an open redirect due to improper validation of the callbackURL parameter in the email verification endpoint and any other endpoint that accepts a callback URL...

PT-2024-37047

Name of the Vulnerable Software and Affected Versions Better Auth versions prior to v1.1.6 Description An open redirect vulnerability has been identified in the verify email endpoint of Better Auth, potentially allowing attackers to redirect users to malicious websites. This issue affects users...

Better Auth 输入验证错误漏洞

Better Auth is a framework-agnostic authentication and authorization framework designed for TypeScript. An input validation error vulnerability exists in versions prior to Better Auth v1.1.6, which stems from the presence of an open redirection vulnerability that could allow an attacker to redire...

CVE-2024-56734: URL Redirection to Untrusted Site

Better Auth is an authentication library for TypeScript. An open redirect vulnerability has been identified in the verify email endpoint of all versions of Better Auth prior to v1.1.6, potentially allowing attackers to redirect users to malicious websites. This issue affects users relying on emai...