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ACPT Premium CVE-2026-15354

| EUVDEUVD-2026-70920 CRITICAL
Improper Privilege Management (CWE-269)
2026-09-04 Wordfence GHSA-5gph-5gjx-7rg9
9.8
CVSS 3.1 · Vendor: Wordfence
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Severity by source

Vendor (Wordfence) 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

Remote unauthenticated request to a public form yields admin account takeover (email/password overwrite), giving full confidentiality, integrity, and availability impact with no interaction.

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 (Wordfence).

CVSS VectorVendor: Wordfence

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
Sep 04, 2026 - 07:19 vuln.today
CVE Published
Sep 04, 2026 - 06:40 cve.org
CRITICAL 9.8

DescriptionCVE.org

The ACPT (Premium) plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 2.0.66. This is due to missing authorization in the submit() function, which allows unauthenticated form submissions to control the target user ID before calling wp_update_user(). This makes it possible for unauthenticated attackers to overwrite any WordPress user's email address and password, including an administrator's, and take over the account. Successful exploitation requires a public ACPT user form that permits anonymous submissions.

AnalysisAI

Unauthenticated account takeover in the ACPT (Premium) WordPress plugin (versions up to and including 2.0.66) lets remote attackers hijack any account, including administrators. The plugin's submit() handler processes anonymous form submissions without verifying that the submitter is authorized to modify the targeted user, then passes an attacker-controlled user ID to wp_update_user(), allowing the attacker to overwrite that user's email address and password. …

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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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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation The target site must run ACPT (Premium) <= 2.0.66 and must expose a public ACPT user form configured to permit anonymous (unauthenticated) submissions - this is the concrete prerequisite named in the description. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, 9.8) is internally consistent with the description: fully remote, no authentication, no user interaction, and a direct route to administrator takeover - which is why this warrants emergency patching wherever a public ACPT form is exposed. … 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 Update ACPT (Premium) to the first release above 2.0.66 that contains the authorization fix; consult the vendor changelog at https://acpt.io/changelog/ to confirm the exact patched version, as the provided data does not name a specific fixed release (No vendor-released patch version identified in the input at time of analysis). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, immediately disable and remove the ACPT (Premium) WordPress plugin version 2.0.66 and all earlier versions from all WordPress installations. …

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CVE-2026-15354 vulnerability details – vuln.today

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