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Amelia Booking CVE-2026-109684

| EUVDEUVD-2026-98354 MEDIUM
Missing Authorization (CWE-862)
2026-10-13 Patchstack GHSA-86xw-qcg4-c692
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 Amelia ≤2.4.10
  2. Delivery
    Send crafted request to unprotected endpoint
  3. Exploit
    Bypass missing authorization check
  4. Execution
    Perform/modify restricted booking action
  5. Impact
    Limited integrity impact on application 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

Exploitation requires only a network-reachable WordPress site running the Amelia (ameliabooking) plugin at version 2.4.10 or earlier; per the CVSS vector (AV:N/AC:L/PR:N/UI:N) no authentication, no user interaction, and no non-default configuration are needed, so default installations are affected. The description attributes the flaw to 'Incorrectly Configured Access Control Security Levels,' meaning a plugin feature/endpoint enforces insufficient authorization checks. The practical LIMIT on impact is scope: the CVSS shows only limited integrity impact (I:L) with no confidentiality or availability effect, so an attacker can perform or tamper with a restricted plugin action but cannot read protected data or take the site down through this flaw alone.

Impact

This is a medium-severity (CVSS 5.3) missing-authorization flaw (CWE-862) in the Amelia WordPress booking plugin, reported by Patchstack. The CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates a network-reachable, low-complexity issue requiring no authentication and no user interaction, which normally elevates priority - however, the impact is deliberately scoped low: C:N/I:L/A:N means no confidentiality or availability impact and only limited integrity impact, consistent with an unauthorized actor being able to invoke a restricted action or modify limited data rather than achieve full compromise. No EPSS score was supplied, the CVE is NOT in CISA KEV, and no public proof-of-concept was referenced, so there is no public exploit identified at time of analysis. The combination of easy reachability but low technical impact makes this a routine 'patch in normal cycle' item rather than an emergency: realistically exploitable but limited in damage. Note that EPSS, SSVC, and KEV data were absent from the input and could not be weighed; the only intelligence source is the single Patchstack advisory.

Exploit ScenarioDerived

A remote, unauthenticated attacker sends a crafted HTTP request directly to an Amelia plugin endpoint (e.g. an AJAX or REST action) that fails to verify the caller's authorization level, allowing them to perform or alter a booking-related operation they should not be permitted to. No proof-of-concept was referenced, and the CVSS low attack complexity (AC:L) and no-interaction requirement mean the request can be replayed reliably against any affected site without special timing or configuration.

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 13, 2026

Missing authorization in the Amelia WordPress booking plugin (TMS Amelia) through version 2.4.10 allows unauthenticated remote attackers to tamper with restricted plugin actions due to insufficient access control checks. This medium-severity flaw (CVSS 5.3, CWE-862) carries only limited integrity impact (I:L) with no effect on confidentiality or availability, and no public exploit or active exploitation has been identified at time of analysis. Affected are WordPress sites running the plugin at version 2.4.10 or earlier; the issue requires no authentication, user interaction, or non-default configuration per the CVSS vector.

RemediationAI

No vendor-released patch has been identified at time of analysis; monitor the Patchstack advisory for an update and apply it as soon as a fixed version is released. As a compensating control, restrict access to Amelia plugin endpoints-particularly any unauthenticated AJAX or REST API routes that handle booking modifications-using a web application firewall (WAF) or server-level rules requiring authentication, but verify that legitimate customer-facing booking flows are not broken. If booking functionality is not essential, consider temporarily disabling the plugin until a fix is available, accepting the trade-off of lost booking capability. Review user roles and capabilities to ensure only trusted users have administrative access to the plugin's settings.

Affected VersionsENISA

Amelia 0 ≤2.4.10

Affected Packages

euvd amelia 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 Amelia plugin is a widely used WordPress appointment and booking management system. CWE-862 (Missing Authorization) indicates that certain plugin endpoints or functions fail to verify that the requesting user has the required permissions before performing an action. The CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N) confirms the flaw is remotely exploitable without authentication or user interaction, meaning default installations are vulnerable. The limited integrity impact (I:L) suggests an attacker can modify or trigger a restricted operation-such as altering booking data or plugin settings-but cannot read protected information or disrupt availability. The CPE string cpe:2.3:a:tms:amelia:*:*:*:*:*:*:*:* indicates all versions up to and including 2.4.10 are affected.

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Severity by source

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

Missing authorization on a network-facing plugin endpoint is unauthenticated and low-complexity (AV:N/AC:L/PR:N/UI:N); impact is limited to unauthorized state change, so I:L with C:N/A:N.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:N/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
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

DescriptionCVE.org

Missing Authorization vulnerability in TMS Amelia ameliabooking allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Amelia: from n/a through 2.4.10.

Threat Intelligence Overview

EPSS Score
0.2%
Top 93% exploitable
Prevalence
Medium
popular WordPress booking plugin, common but not on every site
Data Quality
5 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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