EUVD-2026-83839
GHSA-hcgg-qj5x-56wj
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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).
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
Lifecycle Timeline
6DescriptionCVE.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.
Articles & Coverage 2
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
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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Same technique File Upload
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External POC / Exploit Code
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