# CVE-2026-124018: Gutenverse Form WordPress Plugin < 3.2.2 CSV Formula Injection via Form Submission

> Unauthenticated attackers can submit formulas in Gutenverse Form submissions that execute when an admin opens exported CSV files, enabling data theft or command execution.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L`)
- **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
- **Harmful if only installed:** No
- **Needs a specific call:** No
- **Fix available:** No
- **Published:** 12 Nov 2026
- **Updated:** 12 Nov 2026
- **Also known as:** GHSA-2q49-62r7-4h3r

## What is CVE-2026-124018?

CVE-2026-124018 is a medium-severity code injection vulnerability in Jegstudio Gutenverse Form – Contact Form Builder, Block Form & Booking Form, published on 12 Nov 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

Gutenverse Form plugin for WordPress before 3.2.2 contains a CSV formula injection vulnerability that allows unauthenticated attackers to inject spreadsheet formula-trigger characters by submitting free-text field values to the public form-submit REST route, which sanitizes input with sanitize_text_field() without stripping characters such as =, +, @, or a leading minus. Attackers can store malicious formulas in entry-data post meta that are later exported unneutralized via fputcsv() or esc_html() in the CSV export functions, causing the formula to execute when an administrator opens the exported file, enabling data exfiltration to an attacker-controlled URL or command execution on the administrator's workstation.

Weakness: CWE-1236 (Improper Neutralization of Formula Elements in a CSV File)

## Which versions are affected by CVE-2026-124018?

An affected version is exposed as installed. No special setting or call is needed.


## How do I fix CVE-2026-124018?

No fix has been published for CVE-2026-124018 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-124018 being exploited?

There is no known exploitation of CVE-2026-124018 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-124018 and fix it if it is affected.

What it is: CVE-2026-124018 is a medium-severity code injection vulnerability in Jegstudio Gutenverse Form – Contact Form Builder, Block Form & Booking Form, published on 12 Nov 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: There is no known exploitation of CVE-2026-124018 in the wild and no public exploit code.
Exposure: An affected version is exposed as installed. No special setting or call is needed.

Affected product: Jegstudio Gutenverse Form – Contact Form Builder, Block Form & Booking Form. 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-2026-124018/ (Markdown: https://insights.sbomify.com/CVE-2026-124018/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-124018
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-124018
- OSV: https://osv.dev/vulnerability/CVE-2026-124018

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-124018/
Summaries are generated and may contain mistakes; the official description above is the record.