# CVE-2026-42870: WeGIA: Cross-Site Scripting (XSS) Stored endpoint 'informacao_adicional.php' parameter 'descricao'

> Attackers can inject persistent scripts into user profiles, leading to code execution or account takeover when profiles are viewed.

- **Severity:** Medium 6.4 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H`)
- **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 available:** No
- **Published:** 11 May 2026
- **Updated:** 11 May 2026
- **Also known as:** GHSA-q6jg-hfqv-882f

## What is CVE-2026-42870?

CVE-2026-42870 is a medium-severity cross-site scripting vulnerability in LabRedesCefetRJ WeGIA, published on 11 May 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. In versions prior to 3.7.0, a Stored Cross-Site Scripting (XSS) flaw was identified at the following endpoint: funcionario/profile_funcionario.php?id_funcionario=2. By injecting a malicious payload into the 'Description' (Descrição) field and saving the profile, the script becomes persistently stored. The payload is subsequently executed whenever the profile page is accessed. This vulnerability is fixed in 3.7.0.

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

## Which versions are affected by CVE-2026-42870?


## How do I fix CVE-2026-42870?

No fix has been published for CVE-2026-42870 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-42870 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42870 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-42870 and fix it if it is affected.

What it is: CVE-2026-42870 is a medium-severity cross-site scripting vulnerability in LabRedesCefetRJ WeGIA, published on 11 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42870 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-2026-42870/ (Markdown: https://insights.sbomify.com/CVE-2026-42870/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-42870
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-42870
- OSV: https://osv.dev/vulnerability/CVE-2026-42870

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-42870/
Summaries are generated and may contain mistakes; the official description above is the record.