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ACPT Pro Plugin CVE-2026-32564

| EUVDEUVD-2026-66990 HIGH
SQL Injection (CWE-89)
2026-08-27 Patchstack GHSA-9hrm-9f56-944v
8.5
CVSS 3.1 · Vendor: Patchstack
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Register or obtain subscriber-level WordPress account
  2. Delivery
    Send crafted HTTP request to ACPT plugin endpoint
  3. Exploit
    Inject SQL metacharacters into unparameterized query parameter
  4. Execution
    Database returns rows from arbitrary WordPress tables
  5. Impact
    Exfiltrate user password hashes and site configuration data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Parameterized queries, prepared statements
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Persistence

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires a valid WordPress account with at minimum subscriber-level privileges, as confirmed by CVSS PR:L - unauthenticated exploitation is not supported by the vector. The ACPT (Pro) plugin must be installed and active on the target WordPress instance; the vulnerability surface does not exist without the plugin present. No other non-default configuration appears necessary beyond plugin activation and the attacker holding any authenticated session. What limits exploitation: sites with closed user registration face reduced risk because the attacker must obtain credentials through a separate means such as phishing or credential stuffing; unauthenticated access is ruled out by PR:L. All versions up to and including 2.0.63 are confirmed vulnerable.

Impact

The CVSS 8.5 score is well-supported by the vector: network-accessible, low complexity, no user interaction required, with Scope:Changed and high confidentiality impact. The key limiting factor is the PR:L requirement - exploitation requires at minimum a subscriber-level WordPress account, introducing at least one authentication barrier. Sites with open user registration face substantially higher exposure since any self-registered account can trigger the injection path, while closed-registration deployments require the attacker to compromise or phish credentials first. No EPSS data was supplied, preventing probabilistic exploitation comparison. The absence of a CISA KEV listing means active exploitation is unconfirmed; however, the low attack complexity and Patchstack's public disclosure mean the window before weaponization may be short. The Scope:Changed rating amplifies risk beyond typical plugin SQLi by enabling full-database reads, potentially yielding WordPress admin password hashes and site secrets.

Exploit ScenarioDerived

An attacker registers a free subscriber account on a WordPress site running ACPT Pro 2.0.63 or earlier, or reuses any compromised low-privilege credential obtained elsewhere. The attacker crafts a malicious HTTP request to an ACPT plugin endpoint, embedding SQL metacharacters in a subscriber-controlled parameter that is passed unsanitized to a database query. The database returns rows from arbitrary WordPress tables - including wp_users - allowing the attacker to harvest password hashes and configuration secrets without triggering elevated-privilege checks. No public exploit code has been identified, but low attack complexity means rapid development is plausible following Patchstack's disclosure.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 27, 2026

Subscriber-level SQL injection in ACPT (Pro) Custom Post Types Plugin for WordPress versions 2.0.63 and earlier permits any authenticated subscriber to extract sensitive data from the underlying WordPress database. The CVSS 8.5 score with Scope:Changed reflects that the database read extends beyond the plugin's own tables, potentially exposing WordPress user credentials, site options, and other privileged data. No public exploit code has been identified and the CVE is not listed in the CISA KEV catalog at time of analysis.

RemediationAI

The primary fix is to update ACPT (Pro) to a version beyond 2.0.63 once a patched release is confirmed by the vendor. The Patchstack advisory at https://patchstack.com/database/wordpress/plugin/advanced-custom-post-type/vulnerability/wordpress-acpt-pro-custom-post-types-plugin-for-wordpress-plugin-2-0-63-sql-injection-vulnerability?_s_id=cve should be monitored for the specific patched version number, which was not confirmed in the available intelligence. As an immediate compensating control, administrators should disable open user registration via WordPress Settings > General > uncheck 'Anyone can register', preventing unauthenticated visitors from obtaining subscriber accounts - this reduces but does not eliminate risk from existing subscriber-tier users. Deploying a WordPress-aware WAF with rules targeting SQL metacharacters in requests directed at ACPT plugin endpoints can further reduce exposure. Revoking or auditing subscriber-level accounts on sensitive sites until the patch is applied is advisable where operationally feasible.

Affected VersionsENISA

ACPT (Pro) - Custom Post Types Plugin for WordPress n/a ≤2.0.63

Affected Packages

euvd acpt_pro_custom_post_types_plugin_for_wordpress no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The affected product is the ACPT (Pro) - Custom Post Types Plugin for WordPress, identified by CPE cpe:2.3:a:acpt:acpt_(pro)_-_custom_post_types_plugin_for_wordpress:*:*:*:*:*:*:*:* across all versions up to and including 2.0.63. The root cause is CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), meaning subscriber-controlled input reaches a database query without parameterization or adequate escaping. In WordPress, subscriber-tier injection points are commonly found in AJAX handlers, REST API routes, or shortcode callbacks that accept user-supplied parameters and pass them directly to wpdb queries without prepared statements. The CVSS Scope:Changed metric confirms the injection can read data across table boundaries - significant in WordPress environments where a single database instance stores user accounts, authentication keys, site configuration, and plugin data, allowing an attacker to read well beyond ACPT's own tables.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (Patchstack) PRIMARY 8.5 HIGH
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L
vuln.today AI 8.5 HIGH

Subscriber-level auth required (PR:L); no additional conditions beyond plugin active; scope changes to full database read (S:C, C:H); no confirmed write or significant availability impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:H/SI:N/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
Low

DescriptionCVE.org

Subscriber SQL Injection in ACPT (Pro) - Custom Post Types Plugin for WordPress <= 2.0.63 versions.

Executive ViewAI

Why It Matters

WordPress sites using ACPT (Pro) Custom Post Types Plugin versions 2.0.63 and earlier face a critical risk: any subscriber account holder can bypass normal database security controls to extract sensitive data including login credentials and site configuration. No public exploit has been identified at time of analysis, but the lack of an available vendor patch means organizations must immediately restrict subscriber permissions or remove the plugin to prevent potential account compromise. The vulnerability window creates heightened risk for credential theft and unauthorized site access until mitigations are in place.

Business Impact: High
Compensating Controls

Restrict subscriber database query permissions at the database layer; disable the ACPT Pro plugin if not actively required; deploy Web Application Firewall rules to block SQL injection syntax targeting POST parameters; rotate all WordPress user credentials; enable comprehensive database query logging to detect exploitation attempts.

Threat Intelligence Overview

EPSS Score
0.3%
Top 73% exploitable
Prevalence
Low
specialized WordPress plugin, limited broad enterprise footprint
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Partial

Priority Score

42
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +42
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

SQL injection exploits the way applications construct database queries by mixing user input directly into SQL statements.

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