# CVE-2026-5109: Gravity Forms <= 2.10.0 - Unauthenticated Stored Cross-Site Scripting via Product Option

> Unauthenticated attackers can inject malicious scripts via Product Option fields that execute when administrators view entry details.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/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:** 2 May 2026
- **Updated:** 4 May 2026
- **Also known as:** GHSA-h46x-hfjm-qxjq

## What is CVE-2026-5109?

CVE-2026-5109 is a high-severity cross-site scripting vulnerability in Gravity Forms, published on 2 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Gravity Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 2.10.0. This is due to insufficient validation and output escaping of Product Option field values. The vulnerability exists because the state validation function accepts submitted values where the wp_kses()-sanitized version matches a legitimate option value, but then stores the raw unsanitized value in the database. When administrators view entry details via the Order Summary section, the option_label is output directly without escaping (view-order-summary.php line 32), executing the injected JavaScript. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in entry data that will execute whenever an administrator accesses the entry details page.

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

## Which versions are affected by CVE-2026-5109?


## How do I fix CVE-2026-5109?

No fix has been published for CVE-2026-5109 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-5109 being exploited?

There is no known exploitation of CVE-2026-5109 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5109 and fix it if it is affected.

What it is: CVE-2026-5109 is a high-severity cross-site scripting vulnerability in Gravity Forms, published on 2 May 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-2026-5109 in the wild and no public exploit code.

Affected product: Gravity Forms. 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-2026-5109/ (Markdown: https://insights.sbomify.com/CVE-2026-5109/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5109
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5109
- OSV: https://osv.dev/vulnerability/CVE-2026-5109

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-5109/
Summaries are generated and may contain mistakes; the official description above is the record.