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REPORTPUBLIC METADATA

VU#162329: Multiple vulnerabilities in Thelia 2.6.0 and 2.6.1

Overview Thelia versions 2.6.0 and 2.6.1 contain multiple vulnerabilities relating to file management, Smarty templating, module installation, and administrative workflows. Successful exploitation of these issues could enable remote code execution (RCE), server-side template injection (SSTI), stored and reflected cross-site scripting (XSS), unauthorized URL redirection, and other risks that expose both server-side and client-side attack surfaces. Description Thelia is an open-source e-commerce platform designed to provide merchants with customizable online storefronts, product management workflows, and administrative functionalities. It utilizes the Smarty template engine and provides administrators with broad control over templates, content, and modules. CVE-2026-103521 In Thelia v2.6.0, the document upload endpoint properly blocks the upload of executable file types, but the document update endpoint does not perform the same validation. An attacker with administrative Thelia permissions can exploit this vulnerability to upload arbitrary executable files, such as malicious PHP scripts, to achieve remote code execution on the underlying server. CVE-2026-103522 In Thelia v2.6.0, the store banner upload feature performs insufficient filetype validation that relies exclusively on client-supplied MIME types. An attacker with administrative access can upload a PHP file disguised as an image to bypass validation and achieve remote code execution on the underlying server. CVE-2026-103523 Thelia v2.6.0 contains an open redirect vulnerability in its address creation workflow. After a user accesses a crafted URL and successfully submits the "Add New Address" form, the application redirects them to the URL specified in the next parameter. Because the application does not validate whether the destination belongs to the same origin or an approved allowlist, an attacker can supply an arbitrary external URL and redirect users to an attacker-controlled website. CVE-2026-103524 Thelia v2.6.0 is vulnerable to multiple stored XSS vulnerabilities within the administrative interface. User-supplied input is stored without sufficient output encoding or sanitization and is later rendered in the administrator interface and/or the web store's product pages, allowing arbitrary JavaScript execution when the affected pages are viewed. The vulnerability affects multiple administrative functions including category creation and product creation. CVE-2026-103526 In Thelia v2.6.0, both the administrative login and forgotten password endpoints return different responses for invalid usernames and incorrect passwords, allowing unauthenticated attackers to enumerate valid administrator accounts. Because the endpoint also lacks rate limiting or other protections against repeated authentication attempts, username enumeration can be performed efficiently at scale. CVE-2026-103527 Thelia v2.6.0's Smarty templates (address.html and address-update.html) fail to properly escape double quotes in the next parameter, enabling reflected XSS when an authenticated user visits the malicious link containing attacker‑controlled JavaScript. CVE-2026-103528 Thelia 2.6.0 uses Smarty for email templates without properly restricting access to dangerous PHP functions. An authenticated administrator can inject malicious Smarty expressions into email templates via the messages configuration interface, and when the template is previewed or rendered, functions such as system(), exec(), file_put_contents(), and file_get_contents() can be executed with the privileges of the web process. This allows arbitrary OS command execution, file read/write operations, and RCE on the server. CVE-2026-103529 Thelia v2.6.0 permits authenticated administrators to upload and install modules via the ZIP upload function without validating or sandboxing embedded PHP code. An attacker can include malicious PHP code in a module's install() method which will then be executed upon installation, enabling remote c

Reference details

Source category
research-report
First reported
Oct 12, 2026 14:52 UTC
Last reported
Oct 12, 2026 14:52 UTC
Catalog updated
Oct 14, 2026 03:25 UTC
Record ID
10af30a7cc9e1eed8932203b7951f4d7edd822ff3cd31c985ea60c9e203e1ed0

Published indicators

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Source observations

intelligence_src_cd638cf167c7c119d6

Source-provided label
Publisher RSS metadata
Evidence class
mentioned in report
Confidence
Not reported
Observed
Oct 12, 2026 14:52 UTC
Retrieved
Oct 14, 2026 03:25 UTC

This record contains metadata and attribution only. It does not host, download, unpack, render, or execute malware samples.

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1 sources: 0 stale, 0 needing attention, 0 paused, 0 unverified.

Review source update dates and status
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