# CVE-2023-28423: WordPress Modern Footnotes Plugin <= 1.4.15 is vulnerable to Cross Site Scripting (XSS)

> An authenticated admin can inject malicious scripts into the Modern Footnotes plugin, potentially compromising user sessions or site integrity.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 22 Jun 2023
- **Updated:** 28 Apr 2026
- **Also known as:** GHSA-6qrj-7pjm-97h9

## What is CVE-2023-28423?

CVE-2023-28423 is a medium-severity cross-site scripting vulnerability in Prism Tech Studios Modern Footnotes, published on 22 Jun 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Prism Tech Studios Modern Footnotes plugin <= 1.4.15 versions.

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

## Which versions are affected by CVE-2023-28423?

It affects 1 product.


Products: Prismtechstudios Modern Footnotes.

## How do I fix CVE-2023-28423?

No fix has been published for CVE-2023-28423 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-28423 being exploited?

There is no known exploitation of CVE-2023-28423 in the wild and no public exploit code.

## Other vulnerabilities in Prism Tech Studios Modern Footnotes

- [CVE-2023-5618](https://insights.sbomify.com/CVE-2023-5618/): Modern Footnotes <= 1.4.16 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode (medium 6.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-28423 and fix it if it is affected.

What it is: CVE-2023-28423 is a medium-severity cross-site scripting vulnerability in Prism Tech Studios Modern Footnotes, published on 22 Jun 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-28423 in the wild and no public exploit code.

Affected product: Prism Tech Studios Modern Footnotes. 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-2023-28423/ (Markdown: https://insights.sbomify.com/CVE-2023-28423/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-28423
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-28423
- OSV: https://osv.dev/vulnerability/CVE-2023-28423

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-28423/
Summaries are generated and may contain mistakes; the official description above is the record.