Missing Authorization Vulnerability in Flycart's UpsellWP Plugin
CVE-2026-25419

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
UpsellWP
Vendor
CVE Published:
19 February 2026

What is CVE-2026-25419?

A missing authorization vulnerability exists in Flycart's UpsellWP plugin, specifically in the checkout-upsell-and-order-bumps functionality. This flaw allows attackers to exploit incorrectly configured access control security levels, potentially leading to unauthorized actions. The vulnerability affects users with UpsellWP versions from n/a through 2.2.3, highlighting the importance of securing access controls in web applications to prevent exploitation.

Affected Version(s)

UpsellWP 0 <= 2.2.5

References

https://patchstack.com/database/Wordpress/Plugin/checkout...
vdb-entry

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Rapid0nion | Patchstack Bug Bounty Program
.