CVE-2026-15158criticalCWE-434

CVE-2026-15158: falha crítica em creativethemeshq Blocksy Companion

Blocksy Companion <= 2.1.46 - Unauthenticated Arbitrary File Upload via 'blc-review-images[]' Parameter

Publicada em

Seguir esta CVE+ Monitorar Blocksy Companion

Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.

28Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 9.8epss 1.1%
The Blocksy Companion plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.1.46 via the save_attachments function. This is due to the Custom Fonts extension registering a wp_check_filetype_and_ext filter that approves any filename containing .woff2 or .ttf as a substring via strpos() rather than validating that those strings appear as the final extension via PATHINFO_EXTENSION — allowing double-extension filenames such as shell.woff2.php to pass MIME validation and be handled as permitted font files. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. This vulnerability is only exploitable when the premium version of the plugin (blocksy-companion-pro) is installed with both the WooCommerce Extra (Advanced Reviews) and Custom Fonts extensions active; the free blocksy-companion plugin does not contain the vulnerable code paths.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Produtos afetados
creativethemeshq · Blocksy Companion
CVEs relacionadas — creativethemeshq Blocksy Companion

No mesmo produto, das mais perigosas para as menos.

CVE-2025-12846HIGHBlocksy Companion <= 2.1.19 - Authenticated (Author+) Arbitrary File Upload via SVG Upload BypassEPSS 0.7%CVE-2022-4974MEDIUMFreemius SDK <= 2.4.2 - Missing Authorization ChecksEPSS 0.4%CVE-2024-4487MEDIUMBlocksy Companion <= 2.0.45 - Authenticated (Contributor+) Stored Cross-Site Scripting via SVG UploadsEPSS 0.4%CVE-2026-18488MEDIUMBlocksy Companion <= 2.1.51 - Authenticated (Author+) Stored Cross-Site Scripting via 'tagName' Block Attribute (blocksy/dynamic-data)EPSS 0.4%CVE-2024-2392MEDIUMBlocksy Companion <= 2.0.31 - Authenticated (Contributor+) Stored Cross-Site ScriptingEPSS 0.3%CVE-2026-12430MEDIUMBlocksy Companion <= 2.1.45 - Authenticated (Editor+) Stored Cross-Site Scripting via 'product_description' ParameterEPSS 0.3%