Vulnerability · Published Mar 20, 2026 · Assigned by GitHub_M

CVE-2026-33135WeGIA has Reflected Cross-Site Scripting (XSS) in `novo_memorandoo.php` via `sccs` parameter

Critical 9.3

In plain English

A critical-severity cross-site scripting in WeGIA from LabRedesCefetRJ. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).

Severity (CVSS 3.1)9.3Critical

Exploit odds (30 days)0.2%top 85.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

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 novo_memorandoo.php endpoint. An attacker can inject arbitrary JavaScript into the sccs GET parameter, which is directly echoed into the HTML response without any sanitization or encoding. The script /html/memorando/novo_memorandoo.php reads HTTP GET parameters to display dynamic success messages to the user. At approximately line 273, the code checks if $_GET['msg'] equals 'success'. If true, it directly concatenates $_GET['sccs'] into an HTML alert <div> and outputs it to the browser. This issue has been fixed in version 3.6.7.

Affected products (as reported)

Vendor	Product	Versions
LabRedesCefetRJ	WeGIA	< 3.6.7

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

References

https://github.com/LabRedesCefetRJ/WeGIA/security/advisories/GHSA-w5rv-5884-w94v x_refsource_CONFIRM
https://github.com/LabRedesCefetRJ/WeGIA/pull/1459 x_refsource_MISC
https://github.com/LabRedesCefetRJ/WeGIA/releases/tag/3.6.7 x_refsource_MISC