# CVE-2026-15159: Information disclosure in Ninja Forms - Excel Export

> Authenticated subscribers can download sensitive PII from any Ninja Forms submission by manipulating the export form ID parameter.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Jul 2026
- **Updated:** 17 Jul 2026
- **Also known as:** GHSA-c8hw-hm2h-46fp

## What is CVE-2026-15159?

CVE-2026-15159 is a medium-severity vulnerability in SaturdayDrive Ninja Forms - Excel Export, published on 17 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Ninja Forms - Excel Export plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.3.6 via the 'spreadsheet_export_form_id' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to enumerate any Ninja Forms form ID and download all stored submission data — including names, email addresses, phone numbers, physical addresses, and any other PII collected by site forms — as a downloadable XLSX file.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-15159?


## How do I fix CVE-2026-15159?

No fix has been published for CVE-2026-15159 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-15159 being exploited?

There is no known exploitation of CVE-2026-15159 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15159 and fix it if it is affected.

What it is: CVE-2026-15159 is a medium-severity vulnerability in SaturdayDrive Ninja Forms - Excel Export, published on 17 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-15159 in the wild and no public exploit code.

Affected product: SaturdayDrive Ninja Forms - Excel Export. 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-2026-15159/ (Markdown: https://insights.sbomify.com/CVE-2026-15159/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15159
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15159
- OSV: https://osv.dev/vulnerability/CVE-2026-15159

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-15159/
Summaries are generated and may contain mistakes; the official description above is the record.