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Fox CVE-2026-39501

| EUVDEUVD-2026-20166 MEDIUM
Missing Authorization (CWE-862)
2026-04-08 Patchstack GHSA-wxmh-w8w2-m533
5.3
CVSS 3.1 · Vendor: Patchstack
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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.

Impact

This vulnerability presents a moderate but low-priority risk profile. While the CVSS score of 5.3 (Medium) with network attack vector and no privilege requirement indicates a readily exploitable flaw, multiple signals suggest limited real-world danger: the EPSS exploitation probability is extremely low at 0.02% (4th percentile), indicating security researchers assess minimal likelihood of active exploitation; the confidentiality impact is limited (C:L) rather than severe; and no KEV confirmation or public proof-of-concept is noted in available data. The authorization bypass is genuine and warrants remediation, but prioritization should account for the negligible EPSS score-this appears a correctly-configured but moderately-valued vulnerability rather than a critical real-world threat. For WordPress site operators, remediation is straightforward and recommended but not emergency-level.

Exploit ScenarioDerived

An unauthenticated attacker could craft a network request to the vulnerable FOX plugin endpoint without providing authentication credentials. Due to the missing authorization check, the plugin would process the request and return limited sensitive data (such as currency configuration, pricing information, or user preferences) that should have been restricted. The low attack complexity (AC:L) means no special conditions or timing are required, allowing opportunistic exploitation through automated scanning or manual web reconnaissance of WordPress sites running the affected plugin versions.

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 – Apr 08, 2026

Missing authorization in RealMag777 FOX woocommerce-currency-switcher plugin for WordPress allows unauthenticated remote attackers to bypass access controls and gain read access to sensitive data through incorrectly configured security levels. The vulnerability affects FOX versions up to and including 1.4.5, with a CVSS score of 5.3 and extremely low exploitation probability (EPSS 0.02%), suggesting limited real-world attack incentive despite the missing authorization flaw.

RemediationAI

Update the FOX woocommerce-currency-switcher plugin to a version after 1.4.5. Patch availability beyond version 1.4.5 is inferred from Patchstack's disclosure; vendor-released patched version numbers are not explicitly confirmed in available data. Site administrators should immediately upgrade to the latest available version through the WordPress plugin manager or directly from the plugin repository. Until patching is possible, restrict access to the affected plugin via web application firewall rules if the specific vulnerable endpoint can be identified. Additional mitigation includes conducting a security audit of custom access control implementations and applying WordPress-wide authentication/authorization hardening per WordPress security guidelines.

Affected VersionsENISA

FOX 0 ≤1.4.5

Affected Packages

euvd fox 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 vulnerability stems from improper access control implementation (CWE-862: Missing Authorization) in the FOX woocommerce-currency-switcher WordPress plugin. This class of flaw occurs when an application fails to verify user permissions before exposing sensitive functionality or data. The plugin, which manages currency switching functionality in WooCommerce environments, does not properly enforce authorization checks on certain endpoints or operations, allowing attackers without authentication (PR:N per CVSS vector) to access protected resources. The affected product is identified by CPE cpe:2.3:a:realmag777:fox:*:*:*:*:*:*:*:* across all versions from inception through 1.4.5.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

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

Primary rating from Vendor (Patchstack) · only source for this CVE.

CVSS VectorVendor: Patchstack

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

DescriptionCVE.org

Missing Authorization vulnerability in RealMag777 FOX woocommerce-currency-switcher allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects FOX: from n/a through <= 1.4.5.

Threat Intelligence Overview

EPSS Score
0.0%
Top 96% exploitable
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 0.0%
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
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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