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AIWU CVE-2026-65507

| EUVDEUVD-2026-53963 CRITICAL
Incorrect Privilege Assignment (CWE-266)
2026-08-06 Patchstack GHSA-xpch-grqf-pgpq
9.8
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
    Identify site running AIWU ≤1.5.6
  2. Delivery
    Send crafted request to privilege endpoint
  3. Exploit
    Bypass missing capability check
  4. Execution
    Gain elevated/admin role
  5. Impact
    Install backdoor and take over site

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V8 - Authorization Privilege assignment review
Exploitation Conditions

The CVE description gives no configuration or feature prerequisite beyond running an affected version, and the CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates no special conditions - remote unauthenticated exploitation against default installations of the AIWU plugin version 1.5.6 or earlier. The primary limiting factor is deployment: the target site must have the AIWU (ai-copilot-content-generator) plugin installed and active. The specific vulnerable endpoint, parameter, or role-assignment routine is not disclosed in the available data, so the exact triggering request cannot be confirmed from this input.

Impact

The signals partially align toward high priority but contain important gaps. The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, base 9.8) indicates trivial remote, unauthenticated exploitation with full impact, and the CWE-266 classification is consistent with a genuine privilege-escalation primitive. However, no EPSS score, SSVC decision, KEV status, or POC availability was supplied, so exploitation probability cannot be quantified from the input - no public exploit identified at time of analysis. The description is extremely terse ('Unauthenticated Privilege Escalation in AIWU <= 1.5.6') and does not name the specific vulnerable endpoint or condition, so while the CVSS numbers argue for urgency, the real-world threat is bounded chiefly by the plugin's likely small deployment footprint rather than by exploitation difficulty. Net: high technical severity for sites running the plugin, but likely limited overall exposure given prevalence.

Exploit ScenarioDerived

A remote attacker sends a crafted unauthenticated request directly to a vulnerable AIWU endpoint on a target WordPress site and, because the plugin assigns privileges without a proper capability or authentication check, obtains an elevated (likely administrator-level) role or performs a privileged action. From there the attacker can install malicious plugins, create rogue admin accounts, and fully compromise the site. No public exploit is identified at time of analysis, but the low attack complexity means weaponization would be straightforward if the vulnerable endpoint is known.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 06, 2026

Unauthenticated privilege escalation in the AIWU (AI Copilot Content Generator) WordPress plugin versions 1.5.6 and earlier allows remote attackers with no authentication to gain elevated privileges within the WordPress site. Reported by Patchstack and tracked as EUVD-2026-53963, the flaw carries a CVSS 9.8 rating driven by network-reachable, no-interaction exploitation with high confidentiality, integrity, and availability impact. There is no public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

RemediationAI

No vendor-released patch version is identified at time of analysis; the input lists 1.5.6 and earlier as affected but does not name a fixed release. Administrators should consult the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/ai-copilot-content-generator/vulnerability/wordpress-aiwu-plugin-1-5-6-privilege-escalation-vulnerability) for any updated version and upgrade immediately if one is published. Until a confirmed fixed version is available, the most reliable compensating control is to deactivate and remove the AIWU plugin, which eliminates the vulnerable code path at the cost of losing the AI content-generation feature. If removal is not acceptable, place the plugin's endpoints behind a WAF/virtual patch (Patchstack offers virtual patching for this entry) and restrict access to wp-admin, admin-ajax.php, and REST routes to trusted IP ranges, accepting that IP allowlisting may break legitimate remote or automated use.

Affected VersionsENISA

AIWU n/a ≤1.5.6

Affected Packages

euvd aiwu 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

AIWU is a third-party WordPress plugin (slug: ai-copilot-content-generator) authored by the developer identified as 'sergey', designed to generate content via AI. The vulnerability is classified as CWE-266 (Incorrect Privilege Assignment), meaning the plugin assigns a level of privilege to an actor that is more permissive than intended - typically because a privileged action or role change is exposed through an endpoint that lacks a proper capability or authentication check. The affected CPE is cpe:2.3:a:sergey:aiwu:*:*:*:*:*:*:*:*, covering all released versions up to and including 1.5.6. In WordPress plugins, this class of flaw commonly manifests as an AJAX/REST handler or registration/role-assignment routine reachable by unauthenticated visitors that permits an attacker to escalate to an administrator-equivalent role.

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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 explicitly states unauthenticated privilege escalation, so PR:N and UI:N with network reach; gaining admin-level control yields full C/I/A impact.

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

DescriptionCVE.org

Unauthenticated Privilege Escalation in AIWU <= 1.5.6 versions.

Executive ViewAI

Why It Matters

Organizations deploying the AIWU AI Copilot Content Generator WordPress plugin (versions 1.5.6 and earlier) face immediate risk of complete site compromise through an unauthenticated privilege escalation flaw. Attackers can gain full administrative control without credentials, enabling data theft, malware injection, and infrastructure takeover. Emergency remediation is required.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations until patch availability: (1) immediately deactivate and remove the vulnerable plugin; (2) restore from pre-compromise backups if unauthorized access is confirmed; (3) enforce multi-factor authentication on all WordPress administrative accounts; (4) implement comprehensive audit logging for administrator activities; (5) deploy Web Application Firewall rules targeting known plugin endpoints; (6) restrict WordPress admin interface to approved IP ranges; (7) conduct forensic review of user accounts and permissions for unauthorized modifications.

Threat Intelligence Overview

EPSS Score
0.3%
Top 74% exploitable
Prevalence
Low
niche single-author WordPress AI plugin, limited install base
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 CRITICAL
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
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
Out-of-Cycle
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
Very High
Technical Impact
Total

Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +49
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

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