Welcart e-Commerce < 2.12.1 - Unauthenticated Session Fixation

6.5
Improper Authentication
CVE CVE-2025-15671
CVSS 6.5 (Medium)
Publicly Published August 19, 2026
Last Updated September 2, 2026
Researcher Maktoum (bRpsd)

Description

The Welcart e-Commerce plugin for WordPress is vulnerable to Session Fixation in all versions up to 2.12.1 (exclusive). This is due to the session value coming from user supplied input. This makes it possible for unauthenticated attackers to take over other user's session if they can obtain the session token.

Learn more about Authentication Bypass vulnerabilities and how to prevent them.

References

Share

Vulnerability Details for Welcart e-Commerce

Software Type Plugin
Software Slug usc-e-shop (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.12.1, or a newer patched version
Affected Version
  • < 2.12.1
Patched Version
  • 2.12.1

Recent vulnerabilities in Welcart e-Commerce

# Title CVE ID CVSS Researchers Date
1 Welcart e-Commerce <= 2.12.1 - Unauthenticated Arbitrary File Deletion via PHP Object Injection via 'reserve' Checkout Parameter and 'option' EDY Callback CVE-2026-19887 8.8 daroo September 4, 2026
2 Welcart e-Commerce <= 2.12.1 - Unauthenticated Stored Cross-Site Scripting via 'custom_order' Parameter CVE-2026-19914 7.2 Afifudin Maarif August 31, 2026
3 Welcart e-Commerce < 2.11.33 - Unauthenticated Payment Bypass CVE-2026-15213 5.3 Pedro Pinho August 14, 2026
4 Welcart e-Commerce <= 2.11.31 - Unauthenticated Stored Cross-Site Scripting CVE-2026-27539 7.2 K. Sorrachat August 11, 2026
5 Welcart e-Commerce <= 2.11.33 - Authenticated (Author+) Stored Cross-Site Scripting CVE-2026-16066 6.4 Yaswanth Reddy Sunkara August 10, 2026
6 Welcart e-Commerce <= 2.11.31 - Authenticated (Editor+) SQL Injection CVE-2026-16065 4.9 Yaswanth Reddy Sunkara July 31, 2026
7 Welcart e-Commerce <= 2.11.28 - Missing Authorization CVE-2026-49775 5.3 dodoh4t June 4, 2026
8 Welcart e-Commerce <= 2.11.24 - Missing Authorization to Unauthenticated Information Exposure CVE-2025-12979 5.3 Marcin Dudek (dudekmar) November 12, 2025
9 Welcart e-Commerce <= 2.11.22 - Authenticated (Editor+) Stored Cross-Site Scripting via order_mail CVE-2025-10651 5.5 Miguel Santareno October 21, 2025
10 Welcart e-Commerce <= 2.11.24 - Missing Authorization CVE-2025-62953 4.3 Legion Hunter October 14, 2025

Did you know Wordfence Intelligence provides free personal and commercial API access to our comprehensive WordPress vulnerability database, along with a free webhook integration to stay on top of the latest vulnerabilities added and updated in the database? Get started today!

Learn more

Want to get notified of the latest vulnerabilities that may affect your WordPress site?
Install Wordfence on your site today to get notified immediately if your site is affected by a vulnerability that has been added to our database.

Get Wordfence

The Wordfence Intelligence WordPress vulnerability database is completely free to access and query via API. Please review the documentation on how to access and consume the vulnerability data via API.

Documentation