# CVE-2023-48300: Embed Privacy missing escaping for show_all attribute in opt-out shortcode

> Authenticated attackers can inject arbitrary web scripts via the opt-out shortcode, leading to stored XSS execution for other users.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **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:** 20 Nov 2023
- **Updated:** 4 Sep 2024
- **Also known as:** GHSA-3wv9-4rvf-w37g

## What is CVE-2023-48300?

CVE-2023-48300 is a medium-severity cross-site scripting vulnerability in epiphyt embed-privacy, published on 20 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The `Embed Privacy` plugin for WordPress that prevents the loading of embedded external content is vulnerable to Stored Cross-Site Scripting via `embed_privacy_opt_out` shortcode in versions up to, and including, 1.8.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Version 1.8.1 contains a patch for this issue.

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

## Which versions are affected by CVE-2023-48300?

It affects 1 product.


Products: Epiph Embed Privacy.

## How do I fix CVE-2023-48300?

No fix has been published for CVE-2023-48300 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-48300 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-48300 exists.

## Other vulnerabilities in epiphyt embed-privacy

- [CVE-2023-51694](https://insights.sbomify.com/CVE-2023-51694/): WordPress Embed Privacy Plugin <= 1.8.0 is vulnerable to Cross Site Scripting (XSS) (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-48300 and fix it if it is affected.

What it is: CVE-2023-48300 is a medium-severity cross-site scripting vulnerability in epiphyt embed-privacy, published on 20 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-48300 exists.

Affected product: epiphyt embed-privacy. 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-2023-48300/ (Markdown: https://insights.sbomify.com/CVE-2023-48300/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-48300
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-48300
- OSV: https://osv.dev/vulnerability/CVE-2023-48300

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-48300/
Summaries are generated and may contain mistakes; the official description above is the record.