CVE-2026-81931

Unrestricted Upload of File with Dangerous Type in the product photo upload in Roskus Prospero Flow CRM before 5.16.0 allows an authenticated user holding the create product permission (routine Seller role) to execute arbitrary JavaScript in the application origin. The photo validation rule classifies the file only by its content (magic bytes) and rejects only a fixed list of PHP extensions, while ProductSaveController::save() names the stored file using the client-supplied extension and copies it into the public web root. A file that begins with an image header and carries an HTML extension passes validation, is stored under public/asset/upload/product/, and is served with a text/html content type, turning the upload into first-party stored script execution.

CVSS

No CVSS.

References

Link	Resource
https://github.com/Roskus/prospero-flow-crm/commit/71b20e1a37f4381d1b8b0a6933a942324e1cc19f
https://secur0.com/en/cna/cve-list/cve-2026-81931-unrestricted-upload-product-photo-extension-confusion-xss

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-27 20:18

Updated : 2026-09-01 20:52

NVD link : CVE-2026-81931

Mitre link : CVE-2026-81931

CVE.ORG link : CVE-2026-81931

JSON object : View

Products Affected

No product.

CWE

CWE-434

Unrestricted Upload of File with Dangerous Type

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