# CVE-2026-87854: Subscriptions for WooCommerce REST API authentication bypass

Source: https://junglewise.ai/threats/cve-2026-87854-subscriptions-for-woocommerce-rest-api-authentication-bypass  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-16. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-87854 · Severity: medium · CVSS 5.3 · Published 2026-09-16

The Subscriptions for WooCommerce WordPress plugin fails to properly validate the shared secret protecting its REST API endpoint, allowing attackers to retrieve sensitive subscription data without authentication. This exposes customer usernames, product names, payment amounts, and billing dates, potentially compromising customer privacy and enabling targeted fraud or social engineering attacks.

## Quick answers

**Is CVE-2026-87854 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-87854 being exploited in the wild.

**How severe is CVE-2026-87854?** Medium severity, with a CVSS score of 5.3, published 16 September 2026.

**Which products and versions are affected?** Subscriptions for WooCommerce Subscriptions for WooCommerce before 2.0.3.

**Is there a fix for CVE-2026-87854?** A patch was published on 2026-09-16: Version 2.0.3 fixes the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-87854 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-87854?** Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a REST API authentication bypass caused by improper validation of a shared secret used to protect a subscription data endpoint. The authentication mechanism in versions before 2.0.3 can be bypassed by unauthenticated users through a network request, allowing full retrieval of subscription records stored in the WooCommerce database. An attacker requires only network access to the WordPress site and no user interaction or prior authentication. The impact is disclosure of sensitive subscription metadata including customer identifiers, product details, and payment information. A patch is available in version 2.0.3 and later.

## Affected products

- Subscriptions for WooCommerce Subscriptions for WooCommerce before 2.0.3

## Timeline

- 2026-09-14: disclosed
- 2026-09-16: patched: Version 2.0.3 fixes the vulnerability

## References

- [https://wpscan.com/vulnerability/a47ee557-3036-485a-91ad-af7b84209294/](https://wpscan.com/vulnerability/a47ee557-3036-485a-91ad-af7b84209294/)