CVE-2026-28213: EverShop Auth Bypass Vulnerability

CVE-2026-28213 Overview

CVE-2026-28213 is a critical information exposure vulnerability in EverShop, a TypeScript-first eCommerce platform. The vulnerability exists in the "Forgot Password" functionality, where the API response improperly returns the password reset token when a target email address is specified. This security flaw allows an attacker to obtain the reset token and subsequently take over any user account on the platform.

Critical Impact

Complete account takeover is possible through exposed password reset tokens, enabling attackers to compromise any user account including administrator accounts on affected EverShop installations.

Affected Products

• EverShop versions prior to 2.1.1
• EverShop eCommerce platforms with exposed Forgot Password API endpoints
• Any deployment running vulnerable EverShop versions with password reset functionality enabled

Discovery Timeline

• 2026-02-26 - CVE-2026-28213 published to NVD
• 2026-02-26 - Last updated in NVD database

Technical Details for CVE-2026-28213

Vulnerability Analysis

This vulnerability is classified under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor). The flaw resides in the implementation of the password reset workflow within EverShop's authentication module. When a user or attacker initiates a password reset request by providing an email address, the API response includes the sensitive password reset token directly in its payload rather than sending it exclusively via email to the registered user.

This design flaw represents a fundamental violation of secure authentication practices, where sensitive tokens should never be exposed through API responses. The vulnerability requires no authentication and can be exploited remotely over the network with minimal complexity.

Root Cause

The root cause stems from improper API response handling in the Forgot Password functionality. The development implementation appears to have included the reset token in the API response, likely for debugging or development purposes, which was inadvertently left in production code. Secure password reset implementations should only transmit tokens through the intended secure channel (email to the registered user) and never expose them in API responses.

Attack Vector

The attack vector is network-based and requires no prior authentication or user interaction. An attacker can exploit this vulnerability by:

1. Identifying a target user's email address associated with an EverShop account
2. Submitting a password reset request to the Forgot Password API endpoint
3. Extracting the password reset token from the API response
4. Using the obtained token to reset the victim's password
5. Gaining full access to the compromised account

The vulnerability allows attackers to take over any account on the platform, including administrative accounts, leading to potential data theft, financial fraud, or complete platform compromise.

Detection Methods for CVE-2026-28213

Indicators of Compromise

• Unusual volume of password reset requests targeting multiple accounts from a single IP address or user agent
• Password reset API calls followed by immediate password changes without typical email interaction delay
• Authentication logs showing account access from new locations immediately after password resets
• Multiple failed login attempts followed by successful password reset and login from the same source

Detection Strategies

• Monitor API responses from the password reset endpoint for token exposure in response bodies
• Implement rate limiting detection on the Forgot Password functionality to identify enumeration attempts
• Deploy web application firewalls (WAF) rules to detect and block suspicious password reset activity patterns
• Enable audit logging for all authentication-related API endpoints including password reset requests

Monitoring Recommendations

• Configure alerts for anomalous password reset request volumes exceeding normal baseline thresholds
• Monitor for successful logins occurring within seconds of password reset requests (indicating token interception)
• Track geographic anomalies where password resets and subsequent logins originate from different regions
• Review access logs for patterns indicating automated exploitation attempts against the password reset API

How to Mitigate CVE-2026-28213

Immediate Actions Required

• Upgrade EverShop to version 2.1.1 or later immediately to remediate this vulnerability
• Audit recent password reset activity logs for signs of exploitation
• Force password resets for all administrative and privileged accounts as a precautionary measure
• Review and revoke any active sessions for accounts that may have been compromised

Patch Information

EverShop has addressed this vulnerability in version 2.1.1. The fix removes the password reset token from API responses, ensuring tokens are only delivered through the secure email channel. Organizations running affected versions should upgrade immediately.

For detailed patch information, refer to the GitHub Release v2.1.1 and the GitHub Security Advisory GHSA-cg73-g723-39jw.

Workarounds

• If immediate patching is not possible, consider temporarily disabling the Forgot Password functionality until the upgrade can be completed
• Implement a reverse proxy or WAF rule to strip sensitive tokens from API responses as a temporary measure
• Restrict access to the password reset API endpoint to known trusted IP ranges if operationally feasible
• Monitor all password reset activity closely until the patch is applied

# Verify EverShop version after upgrade
npm list evershop | grep evershop
# Expected output should show version 2.1.1 or higher