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Web to Print EUVDEUVD-2026-83839

| CVE-2026-82187 CRITICAL
Unrestricted Upload of File with Dangerous Type (CWE-434)
2026-09-21 WPScan GHSA-hcgg-qj5x-56wj
9.8
CVSS 3.1 · Vendor: WPScan
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Severity by source

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

Unauthenticated remote upload of arbitrary PHP with a freely-disclosed token (PR:N, UI:N, AC:L) yields code execution and full host compromise (C:H/I:H/A:H).

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

Lifecycle Timeline

6
POC Analysis Generated
Sep 22, 2026 - 11:28 vuln.today
Analysis Generated
Sep 21, 2026 - 17:30 vuln.today
CVSS changed
Sep 21, 2026 - 15:37 NVD
9.8 (CRITICAL)
Patch available
Sep 21, 2026 - 08:16 EUVD
CVE Published
Sep 21, 2026 - 06:00 cve.org
CRITICAL 9.8
CVE Published
Sep 21, 2026 - 06:00 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

The Web to Print Online Designer WordPress plugin before 2.15.0 does not validate the type or extension of uploaded files, and hands the token protecting those uploads to any visitor who asks for it, allowing unauthenticated attackers to upload arbitrary files, including PHP ones, and run code on the server.

AnalysisAI

Unauthenticated arbitrary file upload in the Web to Print Online Designer WordPress plugin (versions 1.7.0 through before 2.15.0) allows any remote visitor to obtain the token that protects the plugin's upload handler and then push arbitrary files, including PHP scripts, into a web-reachable location - resulting in remote code execution with total confidentiality, integrity, and availability impact (CVSS 9.8). No authentication, user interaction, or non-default configuration is required; the plugin simply fails to validate file type or extension and discloses the upload token to anonymous requesters. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
technique details hidden
Execution
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Impact
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Vulnerability AssessmentAI

Exploitation No special conditions beyond having the Web to Print Online Designer WordPress plugin (versions 1.7.0 through before 2.15.0) installed and reachable - remote unauthenticated exploitation works against default configurations. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a genuine high-priority vulnerability, and the signals largely agree. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Vendor-released patch: 2.15.0 - upgrading the Web to Print Online Designer plugin to 2.15.0 (or later) is the primary and only complete fix, as that release closes the 1.7.0-to-<2.15.0 affected range; apply it through the WordPress plugin updater or by deploying the tagged package, and verify the plugin version header afterwards. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory every WordPress instance in the estate to identify any running Web to Print Online Designer at versions 1.7.0 through 2.14.x (i.e., anything below 2.15.0), prioritizing internet-facing and customer-facing sites, and block or take offline any exposed instance that cannot be updated immediately; also review web server and upload directories for unexpected PHP files and unknown administrative accounts as a sign of prior compromise. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-83839 vulnerability details – vuln.today

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