# CVE-2026-5710: Path traversal in Drag and Drop Multiple File Upload for Contact Form 7

> Unauthenticated attackers can read arbitrary files within the wp-content directory via path traversal in the mfile parameter, exposing sensitive data.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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 Apr 2026
- **Updated:** 17 Apr 2026
- **Also known as:** GHSA-j54c-rr2x-ff86

## What is CVE-2026-5710?

CVE-2026-5710 is a high-severity path traversal vulnerability in glenwpcoder Drag and Drop Multiple File Upload for Contact Form 7, published on 17 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Drag and Drop Multiple File Upload for Contact Form 7 plugin for WordPress is vulnerable to Path Traversal leading to Arbitrary File Read in versions up to and including 1.3.9.6. This is due to the plugin using client-supplied mfile[] POST values as the source of truth for email attachment selection without performing any server-side upload provenance check, path canonicalization, or directory containment boundary enforcement. In dnd_wpcf7_posted_data(), each user-submitted filename is directly appended to the plugin's upload URL without sanitization. In dnd_cf7_mail_components(), the URL is converted back to a filesystem path using str_replace() and only file_exists() is used as the acceptance check before attaching the file to the outgoing CF7 email. This makes it possible for unauthenticated attackers to read and exfiltrate arbitrary files readable by the web server process via path traversal sequences in the mfile[] parameter, with files being disclosed as email attachments. Note: This vulnerability is limited to the 'wp-content' folder due to the wpcf7_is_file_path_in_content_dir() function in the Contact Form 7 plugin.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-5710?


## How do I fix CVE-2026-5710?

No fix has been published for CVE-2026-5710 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-5710 being exploited?

There is no known exploitation of CVE-2026-5710 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5710 and fix it if it is affected.

What it is: CVE-2026-5710 is a high-severity path traversal vulnerability in glenwpcoder Drag and Drop Multiple File Upload for Contact Form 7, published on 17 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-5710 in the wild and no public exploit code.

Affected product: glenwpcoder Drag and Drop Multiple File Upload for Contact Form 7. 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-2026-5710/ (Markdown: https://insights.sbomify.com/CVE-2026-5710/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5710
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5710
- OSV: https://osv.dev/vulnerability/CVE-2026-5710

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-5710/
Summaries are generated and may contain mistakes; the official description above is the record.