Insufficient Validation in Subscriptions for WooCommerce Plugin Exposes Sensitive Data
CVE-2026-87854

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Subscriptions For WooCommerce
Vendor
CVE Published:
16 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-87854?

The Subscriptions for WooCommerce plugin, prior to version 2.0.3, contains a vulnerability that fails to properly validate the shared secret for one of its REST endpoints. This security oversight allows unauthenticated users to access a complete list of the store's subscriptions. The exposed data includes sensitive information such as customer usernames, product names, recurring payment amounts, and payment dates. Remedying this flaw is essential to protect user confidentiality and secure financial transactions.

Affected Version(s)

Subscriptions for WooCommerce 0 < 2.0.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-87854 - Proof of Concept

References

https://wpscan.com/vulnerability/a47ee557-3036-485a-91ad-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Karthik Ramakrishnan
WPScan
.