EUVD-2026-39748
GHSA-qqcv-c52c-7244
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Network-accessible WordPress endpoint, no special conditions; PR:L because subscriber account is required; no confidentiality impact per description.
Primary rating from Vendor (patchstack).
CVSS VectorVendor: patchstack
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Lifecycle Timeline
2DescriptionCVE.org
Subscriber Broken Access Control in Email Marketing for WooCommerce by Omnisend <= 1.19.0 versions.
AnalysisAI
Broken access control in Email Marketing for WooCommerce by Omnisend (versions up to and including 1.19.0) allows authenticated subscriber-level WordPress users to invoke privileged plugin functionality without proper authorization checks. Exploitation requires only a low-privilege WordPress account and no user interaction, enabling unauthorized modification of plugin state and potential availability disruption. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid WordPress account with at minimum subscriber-level privileges; this is the lowest authenticated role in WordPress and is automatically granted to anyone who registers on a site with open registration enabled. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 5.4 (Medium) reflects a constrained but real risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker registers a free subscriber account on a WooCommerce storefront - or reuses a previously obtained low-privilege account - then directly calls the vulnerable Omnisend plugin endpoint (REST route or AJAX action) without the expected authorization check being enforced. With no POC publicly available, the exact endpoint and payload are not confirmed, but successful exploitation would allow the attacker to manipulate email marketing configuration or degrade plugin availability. |
| Remediation | Update the Omnisend WooCommerce plugin to a version beyond 1.19.0; the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/omnisend-connect/vulnerability/wordpress-email-marketing-for-woocommerce-by-omnisend-plugin-1-19-0-broken-access-control-vulnerability should be consulted for the confirmed fixed release version, as no exact patched version number is available in the current source data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
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External POC / Exploit Code
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