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MotoPress Timetable CVE-2026-9228

| EUVDEUVD-2026-32705 MEDIUM
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-05-28 Wordfence GHSA-gcrv-h884-8q69
4.3
CVSS 3.1 · NVD
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Attack ChainAIDerived

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

  1. Access
    Obtain WordPress contributor account
  2. Delivery
    Send AJAX POST to admin-ajax.php with action_get_event_data
  3. Exploit
    Enumerate timeslot IDs via sequential integer iteration
  4. Execution
    Bypass authorization check in class-events.php
  5. Persist
    Retrieve WP_Post objects of private and draft mp-event posts
  6. Impact
    Exfiltrate post content, author, and status data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Object-level authorization, IDOR prevention
Exploitation Conditions

Exploitation requires a valid WordPress user account with at minimum contributor-level privileges on the target site - anonymous or subscriber-level access is insufficient. The target site must have the Timetable and Event Schedule by MotoPress plugin installed, active, and running version 2.4.16 or earlier. For meaningful data exposure, the site must also have draft, pending, or private mp-event posts created by other users, as the vulnerability only exposes non-public content that would otherwise be access-restricted. The CVSS vector PR:L confirms the authenticated requirement. What limits exploitation is the contributor-role prerequisite (a non-trivial barrier on tightly managed sites), the narrow data exposure (event post metadata only, no credentials or system access), and the unchanged scope (S:U, no lateral movement beyond the WordPress data layer).

Impact

The CVSS 3.1 base score of 4.3 (Medium) reflects a constrained impact profile: AV:N (network-exploitable), AC:L (low complexity), PR:L (requires authenticated low-privilege account), UI:N (no victim interaction needed), S:U (no scope change), and C:L/I:N/A:N (partial confidentiality loss only). Real-world risk is moderate-to-low for most deployments. The requirement for at least contributor-level WordPress access substantially limits the attacker pool - this is not an unauthenticated or subscriber-level issue. The confidentiality impact is limited to metadata and content of non-public event posts, not credentials, session tokens, or system-level data. No EPSS data was provided in the intelligence package, and this CVE does not appear in the CISA KEV catalog, meaning no confirmed active exploitation is known. No public exploit code or POC has been identified. The primary real-world concern is insider threat or compromised contributor accounts on multi-author WordPress sites that publish sensitive event drafts.

Exploit ScenarioDerived

An attacker with a valid contributor account on a target WordPress site sends a series of crafted AJAX POST requests to the site's admin-ajax.php endpoint, calling action_get_event_data with incrementing or guessed timeslot ID values. Because the plugin performs no authorization check on the requested ID, each valid ID returns the full WP_Post object - including draft or private event content authored by editors, administrators, or other users - which the attacker aggregates to exfiltrate unpublished event details, author identities, and confidential scheduling information.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – May 28, 2026

Insecure Direct Object Reference in the Timetable and Event Schedule by MotoPress WordPress plugin (all versions through 2.4.16) allows authenticated contributors to bypass object-level authorization and read non-public content belonging to other users. The vulnerability exists in the action_get_event_data AJAX action, which accepts a user-controlled timeslot key with no ownership or visibility validation, exposing full WP_Post data - including post_content, post_excerpt, post_status, and post_author - for draft, pending, and private mp-event posts. No public exploit code has been identified at time of analysis, and this CVE does not appear in the CISA KEV catalog.

RemediationAI

An upstream code fix has been committed to the WordPress plugin SVN repository (changeset 3548166: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3548166%40mp-timetable&new=3548166%40mp-timetable&sfp_email=&sfph_mail=); however, the exact released patched version number is not independently confirmed from the available intelligence data - administrators should update the plugin to the latest available version via the WordPress dashboard and verify the installed version is newer than 2.4.16. As a compensating control on sites where the update cannot be immediately applied, consider restricting contributor-level role assignment to fully trusted users only, since contributor access is a hard prerequisite for exploitation. Removing the contributor role from untrusted or external users eliminates the attack surface without disabling the plugin. Monitoring AJAX requests to wp-admin/admin-ajax.php targeting action_get_event_data with anomalous or rapidly cycling post ID parameters can serve as a detection signal for enumeration attempts.

Affected VersionsENISA

Timetable and Event Schedule by MotoPress 0 ≤2.4.16

Affected Packages

euvd timetable_and_event_schedule_by_motopress 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

CWE-639 (Authorization Bypass Through User-Controlled Key) describes the root cause: the plugin's AJAX handler accepts an attacker-controlled identifier and retrieves the corresponding database object without verifying that the requesting user is authorized to view it. Code inspection via the WordPress Trac browser confirms the flaw spans multiple layers of the plugin: class-core.php (L311), class-controller-events.php (L62), class-events.php (L102), and class-hooks.php (L152) - indicating the missing authorization check is not isolated to a single function but reflects a design-level oversight in the plugin's event data retrieval flow. The affected product is identified by CPE cpe:2.3:a:jetmonsters:timetable_and_event_schedule_by_motopress:*:*:*:*:*:*:*:*, published by JetMonsters for the WordPress ecosystem. The vulnerability class is a classic IDOR: sequential or guessable integer IDs allow enumeration without any privileged API key or session token beyond a standard contributor account.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

DescriptionCVE.org

The Timetable and Event Schedule by MotoPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.4.16 via the action_get_event_data due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with contributor-level access and above, to enumerate timeslot IDs and read the full WP_Post object - including post_content, post_excerpt, post_status, and post_author - of draft, pending, and private mp-event posts belonging to other users, along with their associated raw timeslot descriptions.

Threat Intelligence Overview

EPSS Score
0.0%
Top 90% exploitable
Social Media
1
Sightings
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 0.0%
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

22
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +22
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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