CVE-2026-1555

WebStack <= 1.2024 - Unauthenticated Arbitrary File Upload

CVSS 9.8 CRITICALEPSS 1.0%CWE-434

The WebStack theme for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the io_img_upload() function in all versions up to, and including, 1.2024. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Productos afectados

Owen · WebStack

PoCs públicas encontradas — 2

githubgithub.com/willygailo/WG-CVE-2026-1555-Linux★ 0 githubgithub.com/webshellseo8/CVE-2026-1555-POC★ 0

⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.

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Referencias

https://github.com/owen0o0/WebStack/blob/master/inc/ajax.php#L5 https://github.com/owen0o0/WebStack/tree/master https://www.wordfence.com/threat-intel/vulnerabilities/id/b97805de-1b47-4c9f-baae-2e37c1b78570?source=cve