What is the CVSS score of EUVD-2026-39683?

EUVD-2026-39683 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: 0.3%.

Which versions of Syncee Dropshipping are affected by EUVD-2026-39683?

The Syncee Premium Dropshipping & Wholesale WordPress plugin (versions ≤1.0.27) contains an authentication bypass enabling unauthenticated remote access to confidential business data.

How to fix or mitigate EUVD-2026-39683?

Within 24 hours: identify all WordPress instances running Syncee Premium plugin versions 1.0.27 and earlier, and disable the plugin immediately. Within 7 days: if plugin functionality is business-critical, implement Web Application Firewall rules to restrict plugin endpoint access to authorized administrator IP addresses only. Within 30 days: monitor Syncee's security advisory channels for a patched version update, conduct testing in staging, and re-enable only after verifying the fix.

Syncee Dropshipping EUVD-2026-39683

| CVE-2026-54846 HIGH

Missing Authorization (CWE-862)

2026-06-26 audit@patchstack.com

GHSA-fmxq-8fpc-g567

WordPress Authentication Bypass Wordpress Plugin

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

Unauthenticated network endpoint with missing authorization (AV:N/AC:L/PR:N/UI:N) yields information disclosure only, so C:H but I:N/A:N.

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

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 26, 2026 - 15:37 vuln.today

DescriptionCVE.org

Unauthenticated Broken Access Control in Syncee Premium Dropshipping & Wholesale <= 1.0.27 versions.

AnalysisAI

Sensitive data disclosure in the Syncee Premium Dropshipping & Wholesale WordPress plugin (versions <= 1.0.27) lets remote unauthenticated attackers reach functionality that should be access-restricted, exposing confidential information without any login. Reported by Patchstack and tagged as an authentication bypass, the flaw stems from missing authorization checks (CWE-862) on plugin endpoints. No public exploit identified at time of analysis, and no EPSS or CISA KEV signal is present in the supplied data, but the CVSS 3.1 base score of 7.5 reflects easy network reach with a high confidentiality impact.

Technical ContextAI

Syncee is a commercial WordPress plugin used by online stores to import, sync, and manage dropshipping and wholesale product catalogs from external suppliers. The root cause is CWE-862 (Missing Authorization): one or more plugin-registered actions or routes (typically WordPress AJAX wp_ajax_nopriv_* handlers, REST routes, or admin-post endpoints) execute privileged logic without verifying the caller's capability or identity. Because WordPress plugins frequently expose nonce-less or capability-unchecked callbacks, an attacker can invoke the vulnerable handler directly over HTTP. The CVSS vector (C:H, I:N, A:N) indicates the impact is confined to reading data the attacker should not be able to access, rather than modifying state or disrupting service.

RemediationAI

No vendor-released patch version is identified in the available data, so confirm the fixed release directly via the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/syncee-global-dropshipping/vulnerability/wordpress-syncee-premium-dropshipping-wholesale-plugin-1-0-27-broken-access-control-vulnerability?_s_id=cve) and your WordPress plugin updates page, then upgrade to the first release above 1.0.27 as the primary fix. Until a confirmed fixed version is installed, compensating controls include placing the site behind a WAF (Patchstack offers a virtual patch for this CVE) and adding rules to block direct requests to the plugin's AJAX (admin-ajax.php actions) and REST endpoints from unauthenticated clients - note this can break legitimate front-end catalog sync features if the plugin relies on those handlers for logged-out visitors. If the plugin's functionality is not actively needed, deactivating and removing it fully eliminates exposure at the cost of losing supplier-sync capability. Restrict and monitor access to wp-admin and audit logs for anomalous requests to plugin endpoints in the interim.