# CVE-2026-31894: WeGIA affected by arbitrary file read via symlink in backup restore

> An attacker can read arbitrary files by exploiting symlink handling during backup restoration in WeGIA.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Mar 2026
- **Updated:** 12 Mar 2026
- **Also known as:** GHSA-6mmm-27h8-8g55

## What is CVE-2026-31894?

CVE-2026-31894 is a medium-severity path traversal vulnerability in Wegia Wegia, published on 11 Mar 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 3.6.5, The patched loadBackupDB() extracts tar.gz archives to a temporary directory using PHP's PharData class, then uses glob() and file_get_contents() to read SQL files from the extracted contents. Neither the extraction nor the file reading validates whether archive members are symbolic links. This vulnerability is fixed in 3.6.6.

Weakness: CWE-59 (Improper Link Resolution Before File Access)

## Which versions are affected by CVE-2026-31894?

It affects 1 product.


Products: Wegia Wegia.

## How do I fix CVE-2026-31894?

No fix has been published for CVE-2026-31894 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-31894 being exploited?

There is no known exploitation of CVE-2026-31894 in the wild and no public exploit code.

## Other vulnerabilities in Wegia Wegia

- [CVE-2026-28409](https://insights.sbomify.com/CVE-2026-28409/): WeGIA Vulnerable to Remote Code Execution (RCE) via OS Command Injection (critical 10.0)
- [CVE-2025-58745](https://insights.sbomify.com/CVE-2025-58745/): WeGIA has a bypass for the fix for CVE-2025-22133 - Arbitrary File Upload leads to Remote Code Execution (RCE) (critical 10.0)
- [CVE-2025-58159](https://insights.sbomify.com/CVE-2025-58159/): WeGIA Authenticated Arbitrary File Upload Leading To Remote Code Execution (RCE) (critical 10.0)
- [CVE-2025-55169](https://insights.sbomify.com/CVE-2025-55169/): WeGIA Path Traversal at endpoint 'html/socio/sistema/download_remessa.php' via parameter 'file' (critical 10.0)
- [CVE-2025-53823](https://insights.sbomify.com/CVE-2025-53823/): WeGIA vulnerable to SQL Injection (Blind Time-Based) in `processa_deletar_socio.php` parameter `id_socio` (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-31894 and fix it if it is affected.

What it is: CVE-2026-31894 is a medium-severity path traversal vulnerability in Wegia Wegia, published on 11 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-31894 in the wild and no public exploit code.

Affected product: Wegia 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-2026-31894/ (Markdown: https://insights.sbomify.com/CVE-2026-31894/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-31894
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-31894
- OSV: https://osv.dev/vulnerability/CVE-2026-31894

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-31894/
Summaries are generated and may contain mistakes; the official description above is the record.