CVE-2026-33136 WeGIA has Reflected Cross-Site Scripting (XSS) in `listar_memorandos_ativos.php` via `sccd` parameter
Attackers can inject arbitrary JavaScript via the sccd parameter in listar_memorandos_ativos.php, allowing script execution in victim browsers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-33136?
CVE-2026-33136 is a critical cross-site scripting vulnerability in Wegia Wegia, published on 20 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
WeGIA is a web manager for charitable institutions. Versions 3.6.6 and below have a Reflected Cross-Site Scripting (XSS) vulnerability in the listar_memorandos_ativos.php endpoint. An attacker can inject arbitrary JavaScript or HTML tags into the sccd GET parameter, which is then directly echoed into the HTML response without any sanitization or encoding. The script /html/memorando/listar_memorandos_ativos.php handles dynamic success messages to users using query string parameters. Similar to other endpoints in the Memorando module, it checks if $_GET['msg'] equals 'success'. If this condition is met, it directly concatenates and reflects $_GET['sccd'] into an HTML alert <div>. This issue is resolved in version 3.6.7.
Weakness: CWE-79
Which versions are affected by CVE-2026-33136?
It affects 1 product.
Products include Wegia Wegia.
How do I fix CVE-2026-33136?
No fix has been published for CVE-2026-33136 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-33136 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33136 exists.
Other vulnerabilities in Wegia Wegia
- CVE-2026-28409 WeGIA Vulnerable to Remote Code Execution (RCE) via OS Command Injection
- CVE-2025-58745 WeGIA has a bypass for the fix for CVE-2025-22133 - Arbitrary File Upload leads to Remote Code Execution (RCE)
- CVE-2025-58159 WeGIA Authenticated Arbitrary File Upload Leading To Remote Code Execution (RCE)
- CVE-2025-55169 WeGIA Path Traversal at endpoint 'html/socio/sistema/download_remessa.php' via parameter 'file'
- CVE-2025-53823 WeGIA vulnerable to SQL Injection (Blind Time-Based) in `processa_deletar_socio.php` parameter `id_socio`
Sources
Also known as GHSA-xjqp-5q3h-2cxh.