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Mang Board WP EUVDEUVD-2026-69938

| CVE-2026-84770 HIGH
Cross-Site Request Forgery (CSRF) (CWE-352)
2026-09-02 Patchstack GHSA-cr6c-pg75-j2c7
8.8
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 WordPress site running Mang Board WP ≤ 2.3.8
  2. Delivery
    Craft malicious page with auto-submitting forged admin request
  3. Exploit
    Deliver phishing link to site administrator
  4. Execution
    Admin visits page while authenticated
  5. Persist
    Browser submits forged request with admin session cookie
  6. Impact
    Plugin executes unauthorized admin-level action

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V3 - Web Frontend Security Anti-CSRF tokens, SameSite cookies
MITRE ATT&CK

1 technique across 1 tactic: Initial Access

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

Exploitation Conditions

Exploitation requires two conditions to be satisfied simultaneously: (1) the target WordPress site must have the Mang Board WP plugin installed and active at version ≤ 2.3.8, and (2) a WordPress administrator must be actively authenticated and must visit an attacker-controlled page during that session - the UI:R metric reflects this mandatory victim-interaction step. There are no special server configuration requirements beyond the plugin being installed. Exploitation is bounded by the social-engineering prerequisite; unauthenticated site visitors cannot be used as attack vectors, and the attack fails entirely if the administrator is not logged in when the malicious page is visited.

Impact

The CVSS 8.8 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) is consistent with the CSRF class: the attacker needs no server-side credentials, only the ability to lure an authenticated administrator to an attacker-controlled page. The high C/I/A scores reflect realistic worst-case outcomes if the forged request targets admin-level board management functions - such as creating privileged accounts, modifying content, or wiping data. Real-world risk is tempered by the mandatory user-interaction requirement; even a mid-sized municipal IT team in opole should treat this as urgent if their administrators browse untrusted content while authenticated, but the flaw is materially less dangerous than server-side unauthenticated remote code execution. EPSS data is absent from the input, KEV status is not listed, and no public exploit code has been confirmed - all signals point to low-to-moderate exploitation likelihood in the near term for this niche plugin.

Exploit ScenarioDerived

An attacker identifies a WordPress site running Mang Board WP ≤ 2.3.8 and crafts a web page containing hidden auto-submitting HTML forms targeting the plugin's admin action endpoints. The attacker distributes a link to this page via phishing email or social media to the site administrator; when the administrator visits the page while logged into WordPress, the browser silently submits the forged request with the administrator's session cookies, causing the plugin to execute the unauthorized action. No public proof-of-concept code has been identified in the available data.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 02, 2026

Cross-Site Request Forgery in the Mang Board WP WordPress plugin (versions ≤ 2.3.8) allows a remote unauthenticated attacker to perform unauthorized admin-level actions by tricking an authenticated site administrator into visiting a malicious page. Because the plugin's state-changing endpoints lack WordPress nonce verification, the victim's browser automatically submits forged requests using the administrator's active session, yielding high confidentiality, integrity, and availability impact over plugin-managed board content. No public exploit code has been identified and the vulnerability is not listed in CISA KEV at the time of analysis.

RemediationAI

The primary fix is to update the Mang Board WP plugin to the latest available version beyond 2.3.8 via the WordPress Plugin Repository or admin dashboard, which should introduce nonce validation on all state-changing endpoints. Consult the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/mangboard/vulnerability/wordpress-mang-board-wp-plugin-2-3-8-cross-site-request-forgery-csrf-vulnerability) and the plugin's official changelog to confirm the exact fixed release before deploying, as no vendor-confirmed patch version appears in the available data. If an immediate update is not possible, administrators should adopt a dedicated browser profile exclusively for WordPress admin sessions, avoiding any external browsing while authenticated. Restricting admin panel access by IP at the server or firewall level reduces the attack surface further by ensuring the forged request origin is blocked. Note that IP restriction may interfere with remote administration workflows.

Affected VersionsENISA

Mang Board WP n/a ≤2.3.8

Affected Packages

euvd mang_board_wp 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

Mang Board WP is a Korean bulletin-board/forum WordPress plugin authored by Kitae Park (CPE: cpe:2.3:a:kitae_park:mang_board_wp:*:*:*:*:*:*:*:*). The root cause is CWE-352 (Cross-Site Request Forgery): the plugin's sensitive state-changing administrative endpoints fail to validate WordPress nonces, which are the platform's standard per-action CSRF tokens. Without nonce verification on these endpoints, a browser's automatic cookie-based session mechanism can be weaponized by any web page the victim visits to silently issue authenticated requests to the plugin on behalf of the logged-in administrator. This is a classic server-side trust failure - the plugin cannot distinguish legitimate admin actions from forged ones.

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Severity by source

Vendor (Patchstack) PRIMARY 8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI 8.8 HIGH

Network-delivered CSRF requiring no attacker privileges but mandating authenticated admin interaction; high impact reflects admin-level action forgery potential.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:A/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
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

Unauthenticated Cross Site Request Forgery (CSRF) in Mang Board WP <= 2.3.8 versions.

Executive ViewAI

Why It Matters

The Mang Board WP WordPress plugin (versions ≤2.3.8) contains a CSRF vulnerability enabling attackers to trick site administrators into performing unauthorized actions on board content without their knowledge. Any organization running this plugin exposes administrators to potential content manipulation, deletion, or configuration tampering during their active sessions. With CVSS 8.8 severity and no vendor patch available, immediate disabling of the plugin is required.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: immediately disable the vulnerable plugin, restrict administrator network access by IP allowlist, implement Web Application Firewall rules to detect CSRF request patterns, enforce multi-factor authentication on all admin accounts, enable WordPress audit logging to detect and alert on unauthorized admin activity, and maintain regular backups to enable rapid recovery from any unauthorized modifications.

Threat Intelligence Overview

EPSS Score
0.1%
Top 96% exploitable
Prevalence
Low
niche Korean bulletin-board WordPress plugin, limited global deployment
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 HIGH
CISA KEV No
Public POC No
EPSS 0.1%
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
Total

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Request Forgery exploits the automatic credential inclusion behavior of web browsers.

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