XSS in Labredescefetrj Wegia
CVE-2026-33136
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.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (11.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N.
Affected products
- Labredescefetrj Wegia — versions < 3.6.7
- Wegia
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-33136?
- CVE-2026-33136 is a critical-severity vulnerability in Labredescefetrj Wegia, classified under Cross-site Scripting. CVSS score: 9.3/10. Published 2026-03-20.
- How severe is CVE-2026-33136?
- Critical severity. CVSS v3 base score is 9.3 out of 10.