# CVE-2026-26188: Freeform Craft Plugin CP UI (builder/integrations) has Stored Cross-Site Scripting (XSS) issue

> Authenticated low-privilege users can inject malicious scripts into form labels, leading to stored XSS that executes when admins view the builder interface.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 12 Feb 2026
- **Updated:** 13 Feb 2026
- **Also known as:** GHSA-jp3q-wwp3-pwv9

## What is CVE-2026-26188?

CVE-2026-26188 is a medium-severity cross-site scripting vulnerability in solspace craft-freeform, published on 12 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Solspace Freeform plugin for Craft CMS 5.x is a super flexible form-building tool. An authenticated, low-privilege user (able to create/edit forms) can inject arbitrary HTML/JS into the Craft Control Panel (CP) builder and integrations views. User-controlled form labels and integration metadata are rendered with dangerouslySetInnerHTML without sanitization, leading to stored XSS that executes when any admin views the builder/integration screens. This vulnerability is fixed in 5.14.7.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-26188?

2 open source packages ship an affected version, including solspace/craft-freeform. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `solspace/craft-freeform` | Packagist | From 5.0.0 | 5.14.7 |
| `solspace/craft-freeform` | Packagist | From 5.0.0 | 5.14.7 |

Products: Solspace Freeform.

## How do I fix CVE-2026-26188?

Upgrade solspace/craft-freeform to 5.14.7 or later.

## Is CVE-2026-26188 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-26188 exists.

## Other vulnerabilities in solspace craft-freeform

- [CVE-2025-52122](https://insights.sbomify.com/CVE-2025-52122/): The Freeform CraftCMS plugin contains an Server-side template injection (SSTI) vulnerability (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-26188 and fix it if it is affected.

What it is: CVE-2026-26188 is a medium-severity cross-site scripting vulnerability in solspace craft-freeform, published on 12 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-26188 exists.

Affected packages and fixed versions:
- solspace/craft-freeform (Packagist): affected from 5.0.0; fixed in 5.14.7
- solspace/craft-freeform (Packagist): affected from 5.0.0; fixed in 5.14.7

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-2026-26188/ (Markdown: https://insights.sbomify.com/CVE-2026-26188/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-26188
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-26188
- OSV: https://osv.dev/vulnerability/CVE-2026-26188

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-26188/
Summaries are generated and may contain mistakes; the official description above is the record.