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WP Customer Area EUVDEUVD-2026-114311

| CVE-2026-116854 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-10-30 Patchstack GHSA-r8w3-r32p-jcfv
6.5
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/obtain Subscriber account
  2. Delivery
    Submit crafted XSS payload into Customer Area field
  3. Exploit
    Payload stored unsanitized
  4. Execution
    Privileged user views content
  5. Persist
    Script executes in victim browser context
  6. Impact
    Session hijack or admin-context actions

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

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

Exploitation Conditions

Exploitation requires the attacker to hold at least a Subscriber-level authenticated account on the target WordPress site (PR:L), and requires a victim with access to the affected WP Customer Area content to view it, triggering the injected script (UI:R). The specific input field, parameter, or feature that fails sanitization is not described in the available sources. Limiting factors: the need for a valid account (though Subscriber is low and often self-registerable), required victim interaction, and only Low confidentiality/integrity/availability impact; the exploit is confined to WP Customer Area plugin versions 8.4.0 and earlier. The exact trigger mechanism is not stated in the provided references.

Impact

This is a moderate-severity stored/reflected Cross-Site Scripting flaw (CWE-79, CVSS 6.5) in the WP Customer Area WordPress plugin at versions <= 8.4.0, reported by Patchstack. The supplied CVSS vector (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) is internally consistent with a classic authenticated XSS: network vector, low complexity, but requiring at least Subscriber-level authentication (PR:L) and victim user interaction (UI:R), with a scope change (S:C) reflecting script execution in another user's browser context. No EPSS probability is provided in the input and the vulnerability is NOT listed in CISA KEV, so there is no evidence of active exploitation - exploitation status is 'no public exploit identified at time of analysis,' though a public Patchstack database reference exists; it is not verified as working exploit code. The 'this_month' vuln.today decision label indicates a routine prioritization rather than emergency action. Overall this is a real but lower-tier priority: the need for a valid (even low-privilege Subscriber) account plus user interaction, combined with only Low impact across C/I/A, meaningfully limits real-world weaponization compared with an unauthenticated flaw. The low Subscriber privilege barrier is notable because many WordPress sites allow open subscriber registration, which can turn PR:L into an effectively low bar.

Exploit ScenarioDerived

An attacker with a Subscriber-level account (obtainable via open registration on many WordPress sites) injects a malicious script payload through a WP Customer Area input field that is not properly sanitized or output-encoded. When a higher-privileged user such as an administrator or staff member views the affected area, the stored script executes in their authenticated browser session (scope change), potentially enabling session/cookie theft or actions in the admin context. No verified working public exploit is identified; only a Patchstack advisory reference exists.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 30, 2026

Cross-site scripting in WP Customer Area through version 8.4.0 allows a Subscriber-level authenticated user to inject script that executes when another user views affected plugin content. The CVSS 3.1 score is 6.5 with PR:L and UI:R, so exploitation requires a valid low-privilege account and victim interaction; the exact vulnerable field is not disclosed in the available sources. No public exploit was identified at time of analysis, and the provided intelligence does not indicate confirmed active exploitation (CISA KEV).

RemediationAI

No vendor-released patch or exact fixed version is identified in the supplied intelligence, so an upgrade target cannot be confirmed from these sources. Monitor the Patchstack advisory and the plugin vendor for a patched release and apply it when available. Until then, reduce the PR:L prerequisite by disabling open Subscriber registration or requiring administrator approval for new accounts, and restrict access to WP Customer Area content to trusted users; these measures lower exposure but do not fix the underlying XSS. No specific WAF or virtual-patch guidance is provided in the available references.

Affected VersionsENISA

WP Customer Area n/a ≤8.4.0

Affected Packages

euvd wp_customer_area 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

WP Customer Area is a WordPress plugin identified by CPE cpe:2.3:a:aguila_technologies:wp_customer_area:*:*:*:*:*:*:*:* and affected through version 8.4.0. The issue is classified as CWE-79, improper neutralization of user-controllable input before it is placed in output used as a web page, which can lead to script execution in a victim's browser. The supplied sources do not identify the specific input field, parameter, or feature that fails sanitization, so the precise trigger is not described in the available sources. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L indicates network access, low privileges, required user interaction, and scope change with low confidentiality, integrity, and availability impact; the independent assessment ties the low-privilege requirement to a Subscriber-level account and the user interaction to a victim viewing affected content.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (Patchstack) PRIMARY 6.5 MEDIUM
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
vuln.today AI 6.5 MEDIUM

Authenticated Subscriber access gives PR:L, victim viewing injected content gives UI:R, and script execution in another user's context gives S:C with Low C/I/A impact.

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

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

DescriptionCVE.org

Subscriber Cross Site Scripting (XSS) in WP Customer Area <= 8.4.0 versions.

Threat Intelligence Overview

EPSS Score
0.2%
Top 91% exploitable
Prevalence
Low
niche WordPress client-management plugin, limited install base
Social Media
1
Sightings
Data Quality
3 sources
Confidence: Low

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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

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