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APIExperts Square EUVDEUVD-2026-39393

| CVE-2026-54848 HIGH
Insertion of Sensitive Information Into Sent Data (CWE-201)
2026-06-25 Patchstack GHSA-2frh-gc5f-r5qj
8.3
CVSS 3.1 · Vendor: Patchstack
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Severity by source

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

Unauthenticated network access with no interaction (AV:N/AC:L/PR:N/UI:N); a pure CWE-201 data leak affects confidentiality only (C:L), with no demonstrated integrity/availability impact or cross-system 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 (Patchstack).

CVSS VectorVendor: Patchstack

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

2
Analysis Generated
Jun 25, 2026 - 14:27 vuln.today
CVE Published
Jun 25, 2026 - 13:26 cve.org
HIGH 8.3

DescriptionCVE.org

Insertion of Sensitive Information Into Sent Data vulnerability in Saad Iqbal APIExperts Square for WooCommerce allows Retrieve Embedded Sensitive Data.

This issue affects APIExperts Square for WooCommerce: from n/a through 4.7.3.

AnalysisAI

Sensitive data exposure in the APIExperts Square for WooCommerce WordPress plugin (also known as woosquare) through version 4.7.3 allows remote attackers to retrieve embedded sensitive information that the plugin inserts into data it sends. Reported by Patchstack and rated CVSS 8.3, the flaw stems from CWE-201 (Insertion of Sensitive Information Into Sent Data) and is exploitable without authentication or user interaction per its CVSS vector. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify site running woosquare plugin
Exploit
Send crafted request to exposed endpoint
Execution
Plugin embeds sensitive data in response
Impact
Harvest leaked secrets or PII

Vulnerability AssessmentAI

Exploitation Exploitation requires that the target WordPress site has the APIExperts Square for WooCommerce (woosquare) plugin installed and active at version 4.7.3 or earlier with the Square integration in use. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L) describes a network-reachable, low-complexity, unauthenticated flaw with changed scope and Low confidentiality, integrity, and availability impacts, yielding 8.3. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario A remote, unauthenticated attacker sends a crafted HTTP request to a WooCommerce site running the woosquare plugin and receives a response that embeds sensitive information the plugin should not have disclosed, such as configuration secrets or order/customer data. The low attack complexity and lack of required privileges or user interaction make this trivially repeatable, though no public exploit code is identified at time of analysis.
Remediation No vendor-released patch version is identified in the available data; since 4.7.3 is the last affected version, administrators should upgrade to the next release published after 4.7.3 once confirmed by the vendor or Patchstack, verifying the exact fixed version on the advisory at https://patchstack.com/database/wordpress/plugin/woosquare/vulnerability/wordpress-apiexperts-square-for-woocommerce-plugin-4-7-3-sensitive-data-exposure-vulnerability?_s_id=cve before relying on it. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

24 hours: Inventory all WooCommerce instances running woosquare plugin version 4.7.3 or earlier; document data sensitivity and customer impact scope. …

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EUVD-2026-39393 vulnerability details – vuln.today

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