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WebberZone Knowledge Base CVE-2026-108499

| EUVDEUVD-2026-102252 MEDIUM
Missing Authorization (CWE-862)
2026-10-15 Patchstack GHSA-5vg8-r8r7-mmv8
5.3
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 Knowledge Base plugin
  2. Exploit
    Send crafted request to protected KB resource
  3. Execution
    Bypass missing authorization check
  4. Impact
    Read restricted knowledge base content

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

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

Exploitation Conditions

Exploitation requires that the target WordPress site runs the WebberZone Knowledge Base plugin at version 3.2.0 or earlier. The description attributes the issue to 'Incorrectly Configured Access Control Security Levels,' indicating the exposure centers on the plugin's access-control/visibility settings for knowledge base content; sites that do not rely on the plugin's restricted-content features may have little of value to expose. Per the CVSS vector (PR:N/UI:N), no authentication or user interaction is required to reach the vulnerable endpoint, so the primary limiting factors are presence of the vulnerable plugin version and whether any content was actually configured as access-restricted; impact is bounded to confidentiality (C:L) with no write or availability consequences.

Impact

This is a moderate-severity Missing Authorization flaw (CWE-862, CVSS 5.3) in the WebberZone Knowledge Base WordPress plugin, reported by Patchstack. The provided CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates remote, low-complexity, unauthenticated exploitation with no user interaction, which on its face sounds easy to exploit. However, impact is deliberately narrow: only C:L (limited confidentiality) with no integrity or availability impact (I:N/A:N) and unchanged scope (S:U), meaning the realistic outcome is unauthorized read access to knowledge base content that should have been access-controlled, not account takeover or code execution. No EPSS score was provided in the input, and there is no CISA KEV listing and no public exploit code referenced, so there is no evidence of active or imminent widespread exploitation. No SSVC decision data was supplied. Net assessment: this is a genuine but low-priority information-disclosure issue rather than a critical threat - the 'unauthenticated + network' signals are offset by the confidentiality-only, low-magnitude impact and the niche deployment footprint. Note a minor tension to verify: the description frames the issue as 'Incorrectly Configured Access Control Security Levels,' which may imply the flaw only manifests under certain plugin access-control configurations, whereas the CVSS PR:N implies default unauthenticated reach - confirm with the Patchstack advisory whether default installs are affected.

Exploit ScenarioDerived

An unauthenticated remote attacker sends a direct HTTP request to a Knowledge Base plugin endpoint or article resource that lacks a proper authorization check, retrieving knowledge base entries intended to be restricted. Because CVSS is AV:N/AC:L/PR:N/UI:N, no credentials, special timing, or victim interaction are needed, though the realistic payoff is limited to disclosure of protected content (C:L, no integrity/availability impact). No public proof-of-concept exploit was identified in the provided data.

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 15, 2026

Missing authorization in the WebberZone Knowledge Base plugin for WordPress (versions through 3.2.0) allows unauthenticated remote attackers to reach knowledge base content that the plugin's access-control settings were intended to restrict. Because the CVSS vector is PR:N/UI:N, no account or victim interaction is needed; the exposure is limited to confidentiality (C:L, CVSS 5.3), with no write or availability impact. No public exploit code has been identified at time of analysis, and there is no confirmed CISA KEV entry, so real-world exploitation is not established from the available data.

RemediationAI

No vendor-released patch or fixed version above 3.2.0 is identified in the available data, so administrators should treat 3.2.0 and earlier as vulnerable and monitor the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/knowledgebase/vulnerability/wordpress-knowledge-base-plugin-3-2-0-broken-access-control-vulnerability?_s_id=cve together with the WebberZone plugin page for a patched release, applying it as soon as it ships. Until a fix is confirmed, the most direct compensating control is to review the knowledge base content inventory and remove or unpublish any articles, categories, or downloads that rely on the plugin's restricted-visibility settings, on the reasoning that content marked restricted may currently be retrievable without authorization; the trade-off is loss of the member-only content experience, but it eliminates the exposure entirely. Alternatively, block unauthenticated access to the plugin's knowledge base request paths at the web server or WAF layer (for example, the plugin's shortcode/AJAX and any related REST routes) for clients that have not authenticated, accepting that this can break legitimate front-end rendering of the knowledge base for anonymous visitors. Deactivating the plugin removes the vulnerability outright but eliminates all knowledge base functionality and should be paired with an alternative documentation solution if the feature is business-critical. Because exploitation is unauthenticated and requires no user interaction, log review alone is not a sufficient mitigation; if a patched version cannot be applied and restricted content cannot be removed, an HTTP authentication or IP-allowlisting gate in front of the knowledge base section is the practical containment option, at the cost of restricting access for all external users.

Affected VersionsENISA

Knowledge Base 0 ≤3.2.0

Affected Packages

euvd knowledge_base 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 flaw is a CWE-862 Missing Authorization condition in the WordPress plugin WebberZone Knowledge Base, distributed in the WordPress plugin ecosystem and reported through Patchstack's vulnerability database. The CPE cpe:2.3:a:webberzone:knowledge_base:*:*:*:*:*:*:*:* identifies the affected component as the WebberZone knowledge_base plugin package, with every version through 3.2.0 in scope. The description attributes the issue to 'Incorrectly Configured Access Control Security Levels,' which points to the plugin's content-visibility/permission settings for knowledge base articles: the settings exist in configuration, but the server-side code does not enforce the corresponding authorization check on the affected request path, so restricted content can be retrieved by a caller who never satisfied those access rules. This is the classic broken-access-control pattern in WordPress plugins, where a visibility toggle is applied in the UI layer but the underlying query, shortcode, AJAX handler, or REST route returns the same data regardless of the requester's privileges. The supplied CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) confirms the attack is network-reachable, low complexity, unauthenticated, and non-interactive, with only a partial loss of confidentiality and no integrity or availability consequences.

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Severity by source

Vendor (Patchstack) PRIMARY 5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
vuln.today AI 5.3 MEDIUM

Unauthenticated network request (AV:N/PR:N/UI:N) to a missing-authorization endpoint yields only limited data disclosure, so C:L with I:N/A:N and unchanged scope.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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
Low
Integrity
None
Availability
None

DescriptionCVE.org

Missing Authorization vulnerability in WebberZone Knowledge Base knowledgebase allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Knowledge Base: from n/a through 3.2.0.

Threat Intelligence Overview

EPSS Score
0.2%
Top 85% exploitable
Prevalence
Low
niche WordPress knowledge-base plugin, modest install base
Data Quality
4 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 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
Yes
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

26
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +26
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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