CVE-2026-35399 WeGIA has Stored XSS in backup file names
Attackers can inject malicious scripts via backup filenames in WeGIA, leading to session hijacking or unauthorized actions 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-2026-35399?
CVE-2026-35399 is a high-severity cross-site scripting vulnerability in Wegia Wegia, published on 6 Apr 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. Prior to 3.6.9, a stored XSS vulnerability allows an attacker to inject malicious scripts through a backup filename. This could lead to unauthorized execution of malicious code in the victim's browser, compromising session data or executing actions on behalf of the user. This vulnerability is fixed in 3.6.9.
Weakness: CWE-79
Which versions are affected by CVE-2026-35399?
It affects 1 product.
Products include Wegia Wegia.
How do I fix CVE-2026-35399?
No fix has been published for CVE-2026-35399 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-2026-35399 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35399 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-fmwv-62wf-2hgx.