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TMS Amelia CVE-2026-96461

| EUVDEUVD-2026-95595 HIGH
Missing Authorization (CWE-862)
2026-10-09 Patchstack GHSA-8gm3-2259-xx5m
7.5
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
    Reach WordPress site over network
  2. Delivery
    Send crafted request to Amelia endpoint
  3. Exploit
    Bypass missing authorization check
  4. Execution
    Perform privileged booking action
  5. Impact
    Tamper with booking data (integrity impact)

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

No special conditions - remote unauthenticated exploitation is possible against default configurations of the Amelia booking plugin, since the CVSS vector (AV:N/AC:L/PR:N/UI:N) and the description ('Incorrectly Configured Access Control Security Levels', CWE-862) indicate a network-facing endpoint that fails to enforce authorization. The practical prerequisites are: the Amelia plugin installed and active on a network-reachable WordPress site, and a plugin version at or below 2.4.10. The main limiting factor is impact scope - per the vendor vector the impact is integrity-only (C:N/A:N), so the flaw enables unauthorized actions/data modification rather than data disclosure or denial of service; the exact privileged function exposed is not detailed in the available data and should be confirmed against the Patchstack advisory.

Impact

This is a missing-authorization flaw (CWE-862) in the Amelia WordPress booking plugin, scored CVSS 7.5 with vector AV:N/AC:L/PR:N/UI:N and an integrity-only impact (C:N/I:H/A:N). The CVSS signals are internally consistent and point to a network-reachable, low-complexity, unauthenticated issue - PR:N confirms no authentication is required. The 7.5 score is driven entirely by the high integrity impact; there is no confidentiality or availability loss, so this is a data-tampering/unauthorized-action issue rather than data theft or disruption. No EPSS score was provided in the input, so exploitation probability cannot be quantified. The vulnerability is NOT listed in CISA KEV and no public exploit code is referenced, so there is no public exploit identified at time of analysis. Net assessment: a credible, remotely exploitable access-control weakness in a widely-used plugin that warrants prompt patching, but with no current evidence of active exploitation or weaponization. Treat as a real patch priority for exposed WordPress sites while recognizing the risk is bounded to integrity-type impact, not full compromise, based on the vendor CVSS.

Exploit ScenarioDerived

A remote, unauthenticated attacker sends a crafted HTTP request directly to an Amelia plugin AJAX/REST endpoint that fails to verify the caller's authorization level, invoking a privileged booking action (such as modifying or creating booking data) without logging in. Because the CVSS vector is AV:N/AC:L/PR:N/UI:N, this requires only network reachability to the WordPress site and no user interaction. No public proof-of-concept is referenced in the provided data.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 09, 2026

Remote unauthenticated attackers can exploit a missing authorization flaw (CWE-862) in the TMS Amelia WordPress booking plugin versions up to and including 2.4.10, allowing unauthorized modification of data on affected sites (CVSS 7.5, integrity-only impact). The vulnerability stems from an endpoint that fails to enforce proper access control, and no public exploit code has been identified at time of analysis; WordPress installations running the plugin and reachable over the network are at risk.

RemediationAI

No vendor-released patch was identified at time of analysis based on the available data; administrators should monitor the Patchstack advisory and the plugin's official channels for a fixed version. Until a patch is available, consider disabling the Amelia plugin if booking functionality is not essential - this eliminates the attack surface but removes all booking features. If the plugin must remain active, restrict access to its endpoints (for example, block unauthenticated requests to /wp-json/amelia/ or the relevant admin-ajax.php actions) using a web application firewall or server-level rules, but be aware this may break public-facing booking forms and other legitimate functionality. Additionally, ensure the WordPress site uses least-privilege principles and review any custom user roles for unnecessary permissions. No specific compensating control from the vendor was provided in the input data.

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 flaw is a classic missing authorization issue (CWE-862) in a WordPress plugin, where a network-accessible function fails to verify that the requester possesses the necessary capabilities or nonce. The CVSS vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N indicates that an unauthenticated attacker can reach the vulnerable code path without user interaction, and the sole impact is to integrity (unauthorized data modification), with no confidentiality or availability impact per the assessed vector. CPE cpe:2.3:a:tms:amelia:*:*:*:*:*:*:*:* covers all versions of the plugin, and the description notes versions through 2.4.10 are affected. As a booking plugin, Amelia manages appointments, customer records, and scheduling data, so the exposed privileged function could allow tampering with bookings or related configuration, though the exact function is not detailed in the available data.

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Severity by source

Vendor (Patchstack) PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
vuln.today AI 7.5 HIGH

Missing authorization on a network endpoint requires no auth (PR:N) or interaction (UI:N) and is low-complexity; impact is unauthorized actions so I:H with C:N/A:N.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/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
High
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.

Executive ViewAI

Why It Matters

Sites running the TMS Amelia booking plugin at versions up to and including 2.4.10 expose their booking and customer data to unauthorized modification by any network-reachable party, with no vendor fix currently available. Because the flaw permits data alteration without legitimate access, affected organizations face integrity risk to booking records, pricing and customer information that customers and staff rely on. Leadership should care because every internet-facing WordPress installation carrying this plugin remains exposed until it is disabled or otherwise isolated, and remediation depends on vendor action rather than internal patching.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: deactivate or remove the TMS Amelia plugin on internet-facing sites until a fixed version is available; restrict access to the plugin's endpoints to trusted networks or authenticated users at the WAF, reverse proxy, or load balancer; apply virtual patching or custom WAF rules that block unauthorized write requests to the affected endpoint; monitor booking, pricing, and customer records for unexpected modification and review web server and application logs for anomalous requests; maintain offline backups of booking and customer data to support rapid restoration if tampering is detected.

Threat Intelligence Overview

EPSS Score
0.2%
Top 91% exploitable
Prevalence
Medium
Popular WordPress booking plugin, widely installed but not universal
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 0.2%
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
Yes
Human Impact
High
Technical Impact
Partial

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
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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