# CVE-2025-4127: WP SEO Structured Data Schema <= 2.7.11 - Authenticated (Contributor+) Stored Cross-Site Scripting via Plugin Settings

> Authenticated contributors can inject scripts via plugin settings, leading to code execution when administrators view the page.

- **Severity:** Medium 6.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/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:** 8 May 2025
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-j7r8-r87g-9m3j

## What is CVE-2025-4127?

CVE-2025-4127 is a medium-severity cross-site scripting vulnerability in kcseopro WP SEO Structured Data Schema, published on 8 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The WP SEO Structured Data Schema plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘Price Range’ parameter in all versions up to, and including, 2.7.11 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts that will execute whenever an administrator accesses the plugin settings page.

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

## Which versions are affected by CVE-2025-4127?

It affects 1 product.


Products: Wpsemplugins Wp Seo Structured Data Schema.

## How do I fix CVE-2025-4127?

No fix has been published for CVE-2025-4127 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-4127 being exploited?

There is no known exploitation of CVE-2025-4127 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-4127 and fix it if it is affected.

What it is: CVE-2025-4127 is a medium-severity cross-site scripting vulnerability in kcseopro WP SEO Structured Data Schema, published on 8 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-4127 in the wild and no public exploit code.

Affected product: kcseopro WP SEO Structured Data Schema. 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-2025-4127/ (Markdown: https://insights.sbomify.com/CVE-2025-4127/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-4127
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-4127
- OSV: https://osv.dev/vulnerability/CVE-2025-4127

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-4127/
Summaries are generated and may contain mistakes; the official description above is the record.