CVE-2026-91076 Details
Description
The Robokassa payment gateway for Woocommerce WordPress plugin before 1.9.0 does not verify the authenticity of an incoming payment-notification request before acting on the order named in it, allowing unauthenticated attackers to force any WooCommerce order into a failed state. Order identifiers are sequential, so every order in the shop can be taken out of the fulfilment queue one request at a time.
A vulnerability exists in the Robokassa payment gateway for WooCommerce WordPress plugin in versions prior to 1.9.0. The plugin fails to verify the authenticity of incoming payment notification requests before processing them, allowing unauthenticated attackers to change any WooCommerce order's status to 'failed'. Since order IDs are sequential, this vulnerability can be exploited to systematically disrupt the fulfillment process by forcing each order into a failed state, one at a time.
Users are advised to update the Robokassa payment gateway for WooCommerce WordPress plugin to version 1.9.0 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 14, 2026CISA-ADP
Assessed Oct 15, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://wpscan.com/vulnerability/9ba439de-33e3-4d79-b54a-8bf098e89f5f/ | [email protected] | AdvisoryExploitRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| Robokassa | < 1.9.0 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 15, 2026 | CVE Modified | CISA-ADP |
| Oct 14, 2026 | New CVE Received | [email protected] |