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Abandoned Cart Pro CVE-2026-66682

| EUVDEUVD-2026-63307 CRITICAL
Incorrect Privilege Assignment (CWE-266)
2026-08-20 Patchstack GHSA-9fwm-hf83-q4jf
9.8
CVSS 3.1 · Vendor: Patchstack
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Severity by source

Vendor (Patchstack) PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
9.8 CRITICAL

Description and reporter classify this as unauthenticated, network-reachable privilege escalation with no user interaction, yielding full site compromise, so AV:N/AC:L/PR:N/UI:N and C/I/A:H.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Aug 20, 2026 - 12:46 vuln.today
CVE Published
Aug 20, 2026 - 12:07 cve.org
CRITICAL 9.8

DescriptionCVE.org

Unauthenticated Privilege Escalation in Abandoned Cart Pro for WooCommerce <= 10.4.0 versions.

AnalysisAI

Privilege escalation in Abandoned Cart Pro for WooCommerce (Tyche Softwares) affects all versions up to and including 10.4.0, allowing an unauthenticated remote attacker to gain elevated privileges over a WordPress site. The CVSS 3.1 vector (AV:N/PR:N/UI:N) with a 9.8 score indicates the flaw is reachable over the network without credentials or user interaction, and yields full confidentiality, integrity, and availability impact. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation The prerequisite is a WordPress site running WooCommerce with the Abandoned Cart Pro for WooCommerce plugin at version 10.4.0 or earlier, with the vulnerable endpoint network-reachable - the default state for a live store. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The signals align toward high priority: the provider CVSS is 9.8 with a fully remote, unauthenticated, low-complexity vector (AV:N/AC:L/PR:N/UI:N) and high impact across C/I/A, which matches an unauthenticated privilege-escalation description. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade Abandoned Cart Pro for WooCommerce to a release later than 10.4.0 as soon as the vendor's patched build is available; the input does not include an exact fixed version, so released patched version not independently confirmed - consult the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/woocommerce-abandon-cart-pro/vulnerability/wordpress-abandoned-cart-pro-for-woocommerce-plugin-10-4-0-privilege-escalation-vulnerability-2) and the Tyche Softwares changelog for the specific fixed version. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: audit all WordPress instances to identify Abandoned Cart Pro for WooCommerce version 10.4.0 or earlier; disable the plugin immediately or implement Web Application Firewall rules blocking exploitation attempts if disabling is operationally infeasible. …

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CVE-2026-66682 vulnerability details – vuln.today

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