What is the CVSS score of EUVD-2026-36875?

EUVD-2026-36875 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.4%.

Which versions of Coupon Affiliates are affected by EUVD-2026-36875?

Coupon Affiliates WordPress plugin versions 7.8.1 and earlier allow any remote attacker to directly access confidential subscriber information without authentication or user interaction.

How to fix or mitigate EUVD-2026-36875?

Within 24 hours: Identify all WordPress installations running Coupon Affiliates plugin version 7.8.1 or earlier; deactivate and disable the plugin immediately on all affected systems. Within 7 days: Review access logs and database audit trails from the past 90 days to detect unauthorized subscriber data access; document any suspicious activity and prepare breach notification if evidence of compromise is found. Within 30 days: Monitor vendor advisory channels for security patches; conduct comprehensive assessment of alternative coupon management solutions and plan migration strategy if patch availability remains uncertain.

Coupon Affiliates EUVD-2026-36875

| CVE-2026-49068 HIGH

Exposure of Sensitive System Information to an Unauthorized Control Sphere (CWE-497)

2026-06-15 Patchstack

GHSA-2fch-5g6g-5j6q

Information Disclosure Coupon Affiliates

7.5

CVSS 3.1 · Vendor: Patchstack

Severity by source

Vendor (Patchstack) PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

vuln.today AI

7.5 HIGH

Remote unauthenticated HTTP request to a WordPress plugin endpoint leaks subscriber data; no integrity or availability impact, so C:H only.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Jun 15, 2026 - 21:38 vuln.today

DescriptionCVE.org

Subscriber Sensitive Data Exposure in Coupon Affiliates <= 7.8.1 versions.

AnalysisAI

Sensitive data exposure in the Coupon Affiliates WordPress plugin (versions 7.8.1 and earlier) allows remote unauthenticated attackers to retrieve confidential subscriber information over the network without any user interaction. The flaw, reported by Patchstack and classified as CWE-497 (Exposure of Sensitive System Information to an Unauthorized Control Sphere), carries a CVSS 7.5 score reflecting high confidentiality impact with no integrity or availability consequences. No public exploit identified at time of analysis.

Technical ContextAI

Coupon Affiliates (formerly woo-coupon-usage) is a WooCommerce extension by RelyWP that enables WordPress site owners to manage affiliate-driven coupon campaigns, tracking referrals and commissions tied to subscriber accounts. The affected CPE cpe:2.3:a:relywp:coupon_affiliates covers all versions up through 7.8.1. CWE-497 indicates the plugin exposes sensitive subscriber data - likely through an under-protected REST endpoint, AJAX action, or admin-ajax handler - that should have been restricted to authorized roles. In WordPress plugin ecosystems, this class of bug typically stems from missing capability checks (current_user_can) or nonce validation on endpoints that return subscriber, affiliate, or commission data.

RemediationAI

Upstream fix available per Patchstack advisory; released patched version not independently confirmed from the provided data - administrators should consult the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/woo-coupon-usage/vulnerability/wordpress-coupon-affiliates-plugin-7-8-1-sensitive-data-exposure-vulnerability and upgrade to the latest plugin release beyond 7.8.1 via the WordPress plugin dashboard. As compensating controls until patching, restrict access to wp-admin/admin-ajax.php and the plugin's REST routes via a WAF rule (Patchstack, Wordfence, or Cloudflare) targeting the Coupon Affiliates endpoints, which may break legitimate affiliate dashboard functionality, or deactivate the plugin entirely if affiliate features are not business-critical, which will disable coupon attribution and commission tracking.