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Event Tickets EUVDEUVD-2026-94951

| CVE-2026-105891 MEDIUM
Missing Authorization (CWE-862)
2026-10-08 audit@patchstack.com GHSA-rfp5-h757-8q7c
4.3
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
    Obtain low-privileged WordPress account
  2. Delivery
    Send request to unprotected plugin endpoint
  3. Exploit
    Missing authorization check bypassed
  4. Execution
    Perform restricted ticket/event action
  5. Impact
    Limited integrity impact to plugin data

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

Requires a valid authenticated WordPress account on the target site (CVSS PR:L), so the attacker must already be able to log in at a low privilege level such as a subscriber/customer role. The target must run Event Tickets version 5.30.0.1 or earlier. Exploitation is limited by this authentication requirement and by the vulnerability's scope: it grants only an unauthorized restricted action with limited integrity impact (I:L, C:N, A:N), not full account takeover or data disclosure. No user interaction by a victim is needed (UI:N), and no special non-default configuration is indicated in the description.

Impact

This is a genuine-but-moderate issue, not a top-tier emergency. The provided CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N, base 4.3) describes a network-reachable, low-complexity flaw that nonetheless requires an authenticated low-privileged account (PR:L) and yields only limited integrity impact with no confidentiality or availability loss - consistent with CWE-862 Missing Authorization, where an under-privileged but logged-in user can invoke an action they should not. No EPSS score, KEV listing, SSVC decision, or public POC was supplied, so there is no signal of active or imminent exploitation; the only source is a Patchstack-reported advisory. The 'Authentication Bypass' tag conflicts with the data: PR:L and CWE-862 indicate a broken-access-control/authorization flaw for already-authenticated users, not a true authentication bypass - treat the tag with caution. Net: a legitimate access-control defect worth patching on a normal cycle, but the authentication requirement and low, integrity-only impact keep real-world risk modest absent any exploitation evidence.

Exploit ScenarioDerived

An attacker who already holds a low-privileged WordPress account (e.g., a subscriber or any authenticated role) on a site running Event Tickets ≤5.30.0.1 sends a crafted request to a plugin endpoint that fails to verify the caller's authorization. Because the missing check allows an incorrectly-scoped access level, the attacker performs a restricted ticket/event action they should not be permitted to, altering plugin-managed data. No public exploit code was identified at time of analysis.

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 08, 2026

Missing authorization in Event Tickets 5.30.0.1 and earlier allows an authenticated low-privileged WordPress user, such as a subscriber or customer, to perform a restricted event-ticket action they should not be authorized to perform. The affected product is the Liquid Web/StellarWP Event Tickets WordPress plugin, and the issue carries a moderate CVSS score of 4.3 with only low integrity impact and no confidentiality or availability impact. Exploitation requires a valid login but no victim interaction, and no public exploit identified at time of analysis.

RemediationAI

No vendor-released patched version is identified in the provided data; consult the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/event-tickets/vulnerability/wordpress-event-tickets-plugin-5-30-0-1-broken-access-control-vulnerability-2?_s_id=cve and the plugin vendor for an updated Event Tickets release, and apply it as soon as one is available. Until a fix is applied, restrict event-ticket management actions to administrator or editor roles, review and remove unnecessary low-privilege subscriber or customer accounts because exploitation requires a valid authenticated WordPress login (CVSS PR:L), and monitor WordPress audit logs for unauthorized event-ticket changes. If Event Tickets is not business-critical, deactivating the plugin removes the vulnerable attack surface but disables ticketing functionality.

Affected VersionsENISA

Event Tickets 0 ≤5.30.0.1

Affected Packages

euvd event_tickets 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

Event Tickets is a WordPress plugin (slug event-tickets) used for event ticketing and attendee management. The flaw is CWE-862 Missing Authorization: the plugin fails to enforce an authorization check before allowing an action, so a user with only low privileges can bypass intended access-control levels. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N maps to a remotely reachable issue that requires a valid low-privileged account, has low attack complexity, needs no user interaction, does not change scope, and has only low integrity impact. The Patchstack tag Authentication Bypass describes the effect of bypassing role or capability checks rather than an unauthenticated bypass. All versions through 5.30.0.1 are affected per EUVD; no CPE string was supplied in the provided intelligence.

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Severity by source

Vendor (patchstack) PRIMARY 4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
vuln.today AI 4.3 MEDIUM

Network-reachable WordPress endpoint (AV:N/AC:L), but requires a logged-in low-privileged account (PR:L); missing authorization yields limited integrity change only (I:L, C:N, A:N).

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

Primary rating from Vendor (patchstack).

CVSS VectorVendor: patchstack

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

DescriptionCVE.org

Missing Authorization vulnerability in Liquid Web / StellarWP Event Tickets event-tickets allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Event Tickets: from n/a through 5.30.0.1.

Threat Intelligence Overview

EPSS Score
0.2%
Top 91% exploitable
Prevalence
Medium
popular StellarWP WordPress ticketing plugin, widely used but not ubiquitous
Data Quality
6 sources
Confidence: High

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

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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