# CVE-2026-0829: Frontend File Manager Plugin <= 23.5 - Unauthenticated Arbitrary Email Sending

> Unauthenticated attackers can send arbitrary emails and access uploaded files via ID guessing, enabling spam and data exposure.

- **Severity:** Medium 5.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Feb 2026
- **Updated:** 2 Apr 2026
- **Also known as:** GHSA-wmq7-3p89-w6h8

## What is CVE-2026-0829?

CVE-2026-0829 is a medium-severity missing authorization vulnerability in Unknown Frontend File Manager Plugin, published on 17 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Frontend File Manager Plugin WordPress plugin through 23.5 allows unauthenticated users to send emails through the site without any security checks. This lets attackers use the WordPress site as an open relay for spam or phishing emails to anyone. Attackers can also guess file IDs to access and share uploaded files without permission, exposing sensitive information.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-0829?


## How do I fix CVE-2026-0829?

No fix has been published for CVE-2026-0829 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-0829 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-0829 exists.

Public exploit code:

- Frontend File Manager Plugin <= 23.5 - Unauthenticated Arbitrary Email Sending (nuclei): http/cves/2026/CVE-2026-0829.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-0829 and fix it if it is affected.

What it is: CVE-2026-0829 is a medium-severity missing authorization vulnerability in Unknown Frontend File Manager Plugin, published on 17 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-0829 exists.

Affected product: Unknown Frontend File Manager Plugin. 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-2026-0829/ (Markdown: https://insights.sbomify.com/CVE-2026-0829/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-0829
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-0829
- OSV: https://osv.dev/vulnerability/CVE-2026-0829

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-0829/
Summaries are generated and may contain mistakes; the official description above is the record.