EUVD-2026-55014
GHSA-fwrm-w2w9-jm5f
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-delivered upload via HTTP requires only an Author credential (PR:L); no complexity barriers exist; successful PHP execution yields full RCE with complete C/I/A impact on the web server.
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
Lifecycle Timeline
5DescriptionCVE.org
The Squeeze WordPress plugin before 1.7.12 does not validate the file type or extension of the per-size image data written by one of its attachment-update actions, allowing users with the upload_files capability (Author and above) to write an executable PHP file into the uploads directory and achieve remote code execution.
AnalysisAI
Remote code execution in the Squeeze WordPress plugin (versions prior to 1.7.12) is achievable by any authenticated user holding the upload_files capability - granted by default to the Author role and above. The plugin's attachment-update action writes per-size image data to the uploads directory without validating file type or extension, permitting a PHP webshell to be placed in a web-accessible path and directly invoked via HTTP. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid WordPress user account assigned the Author role or any higher role (Editor, Administrator, Super Admin) - specifically, any role granted the native upload_files capability, which WordPress assigns to Author and above by default. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 (High) score with vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H is well-calibrated: the attack is fully network-exploitable with low complexity, requires only a low-privilege WordPress account, and delivers unrestricted RCE with full confidentiality, integrity, and availability impact. … 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 | Update the Squeeze WordPress plugin to version 1.7.12 or later immediately; this release introduces proper file type and extension validation on the affected attachment-update action. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all WordPress installations to identify deployment of the Squeeze plugin and document current versions across the environment. …
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Same technique File Upload
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External POC / Exploit Code
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