# CVE-2026-40284: WeGIA has stored XSS in listar_despachos.php

> Authenticated users can inject malicious JavaScript via the Destinatário field, leading to stored XSS execution for other users viewing dispatch pages.

- **Severity:** Medium 6.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Apr 2026
- **Updated:** 20 Apr 2026
- **Also known as:** GHSA-mccp-8446-phw5

## What is CVE-2026-40284?

CVE-2026-40284 is a medium-severity cross-site scripting vulnerability in LabRedesCefetRJ WeGIA, published on 17 Apr 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

WeGIA is a web manager for charitable institutions. In versions prior to 3.6.10, a Stored Cross-Site Scripting (XSS) vulnerability allows an authenticated user to inject malicious JavaScript via the "Destinatário" field. The payload is stored and later executed when viewing the dispatch page, impacting other users. Version 3.6.10 fixes the issue.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-40284?


## How do I fix CVE-2026-40284?

No fix has been published for CVE-2026-40284 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-40284 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40284 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-40284 and fix it if it is affected.

What it is: CVE-2026-40284 is a medium-severity cross-site scripting vulnerability in LabRedesCefetRJ WeGIA, published on 17 Apr 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40284 exists.

Affected product: LabRedesCefetRJ WeGIA. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-40284/ (Markdown: https://insights.sbomify.com/CVE-2026-40284/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-40284
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40284
- OSV: https://osv.dev/vulnerability/CVE-2026-40284

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-40284/
Summaries are generated and may contain mistakes; the official description above is the record.