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FluentCart EUVDEUVD-2026-108008

| CVE-2026-100142 MEDIUM
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-10-22 WPScan GHSA-m595-x4xx-r4vx
5.3
CVSS 3.1 · Vendor: WPScan
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Attack ChainAIDerived

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

  1. Access
    Reach public FluentCart checkout endpoint
  2. Exploit
    Select another customer's stored address ID
  3. Execution
    Submit order attaching that address
  4. Impact
    Read back victim's disclosed PII

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 WordPress site running FluentCart (A New Era of eCommerce) at a version below 2.2.0 with its public checkout flow active and with target customers who have previously saved stored addresses. The attacker places an order through the normal checkout and supplies/references a stored-address identifier belonging to another customer; the plugin fails to validate ownership of that stored address (CWE-639), so no account credentials are needed (PR:N). Limiting factors: only customers who have stored addresses are exposed; the attacker likely must know or enumerate valid stored-address identifiers; disclosure is confined to postal address, phone number and company details (no payment data, credentials, or write/availability impact stated); and sites already on 2.2.0 or later are not affected.

Impact

This is a medium-severity information-disclosure flaw (CVSS 5.3), and the signals point to a genuine but bounded priority rather than an emergency. The CVSS vector (AV:N/AC:L/PR:N/UI:N) confirms a network-reachable, low-complexity, unauthenticated path with no user interaction, which lowers the exploitation barrier; however, the impact is narrow - C:L with I:N and A:N - meaning only limited confidentiality loss (customer PII) and no integrity or availability impact. No EPSS score is provided in the input, so exploitation probability cannot be quantified. The vulnerability is NOT listed in CISA KEV, so there is no confirmed active exploitation; a public PoC reference from WPScan exists but it is not verified as working exploit code. The vuln.today decision label is 'this_month', consistent with a real-but-non-critical IDOR (CWE-639) that should be remediated on a normal patch cadence rather than as an incident. Net: a legitimate privacy/data-exposure issue warranting the available patch within the month, not a high-CVSS-but-no-real-risk false alarm, but also not an act-now emergency given the limited scope and absence of KEV/EPSS escalation signals.

Exploit ScenarioDerived

An unauthenticated attacker uses the public FluentCart checkout flow to place an order and, instead of supplying their own address, references the stored-address identifier of another customer; because the plugin never verifies that the selected stored address belongs to the requester, the attacker's order is populated with the victim's postal address, phone number and company details, which are then read back. A public PoC reference exists (WPScan) but it is not verified as working exploit code, so weaponization effort is unconfirmed.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 22, 2026

FluentCart (A New Era of eCommerce), a WordPress eCommerce plugin, before version 2.2.0 fails to verify that a stored customer address selected during checkout belongs to the requester, so unauthenticated visitors can attach another customer's saved address to an order they place and read it back - exposing postal addresses, phone numbers and company details. Only sites below 2.2.0 with an active public checkout flow and customers who have previously saved addresses are in scope; the attacker must supply or enumerate a valid stored-address identifier, and disclosed data is limited to contact/shipping details, with no payment data, credentials, or write/availability impact reported. Severity is medium (CVSS 5.3, PR:N via the provided vector), there is no CISA KEV entry, and the WPScan reference is a public PoC/advisory reference that is not verified as working exploit code; overall priority is this_month rather than emergency.

RemediationAI

Update FluentCart (A New Era of eCommerce) to version 2.2.0 or later - vendor-released patch: 2.2.0 - which is the fix for the missing ownership check on stored addresses, and confirm the plugin version after upgrading since WordPress auto-updates can be blocked. If the update cannot be applied immediately, reduce exposure by temporarily disabling guest/unauthenticated checkout or the stored-address selection step in the checkout flow so that address identifiers cannot be supplied by anonymous visitors; the trade-off is lost checkout convenience and potentially abandoned carts, and this only narrows rather than removes the exposure for logged-in flows. Restrict access to the checkout endpoints to trusted traffic, and review existing orders for addresses that do not match the ordering account as a detection measure. Details and the original report are at https://wpscan.com/vulnerability/ef4929d4-c048-413c-885b-0efafdf4e387/ ; the vendor's stated complete fix is upgrading to 2.2.0.

Affected VersionsENISA

FluentCart A New Era of eCommerce 0 <2.2.0

Affected Packages

euvd fluentcart_a_new_era_of_ecommerce fix: 2.2.0

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 CWE-639, Authorization Bypass Through User-Controlled Key - commonly an insecure direct object reference (IDOR) in the plugin's checkout pipeline. FluentCart stores customer address records (shipping/billing entries containing postal address, phone and company fields) and the checkout handler accepts a stored-address identifier supplied by the client without confirming that the record is owned by the current session or account. Because the checkout endpoint is reachable by unauthenticated visitors (CVSS vector PR:N, UI:N), no account or credential is required; the practical constraint is that the attacker must know or enumerate an identifier that maps to a real stored address, and only customers who have saved addresses are affected. Successful abuse is read-only in effect: the foreign address is bound to the attacker's order and can be retrieved in the resulting order/confirmation data. The supplied CPE (cpe:2.3:a:unknown:fluentcart_a_new_era_of_ecommerce:*:*:*:*:*:*:*:*) carries a wildcard version and an unknown vendor token, so version scoping should be taken from the EUVD range (0 to <2.2.0) rather than from the CPE. The precise request parameters and whether identifiers are sequential or otherwise guessable are not described in the available sources.

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Severity by source

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

Unauthenticated network checkout request (AV:N/AC:L/PR:N/UI:N) that discloses limited customer PII (C:L) with no integrity or availability impact and no scope change.

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

Primary rating from Vendor (WPScan).

CVSS VectorVendor: WPScan

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

Lifecycle Timeline

4
CVSS changed
Oct 22, 2026 - 11:22 NVD
5.3 (MEDIUM)
Patch available
Oct 22, 2026 - 07:01 EUVD
CVE Published
Oct 22, 2026 - 06:00 cve.org
MEDIUM 5.3
CVE Published
Oct 22, 2026 - 06:00 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

The FluentCart A New Era of eCommerce WordPress plugin before 2.2.0 does not verify that a stored customer address selected during checkout belongs to the requester, allowing unauthenticated attackers to attach any customer's stored address to an order they place and read it back, disclosing customers' postal addresses, phone numbers and company details.

Threat Intelligence Overview

EPSS Score
0.1%
Top 96% exploitable
Prevalence
Low
niche WordPress eCommerce plugin, limited production deployment footprint
Exploit
POC
Public exploit code exists
Social Media
1
Sightings
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 Yes
EPSS 0.1%
Patch available Yes
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

46
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +26
PoC: +20
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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