# CVE-2016-5834: Cross-site scripting in n/a

> Remote attackers can inject arbitrary web script or HTML via crafted attachment names in WordPress, potentially leading to session hijacking or malicious actions.

- **Severity:** Medium 6.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 29 Jun 2016
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2016-5834, GHSA-pj25-83q9-ppf3, UBUNTU-CVE-2016-5834

## What is CVE-2016-5834?

CVE-2016-5834 is a medium-severity cross-site scripting vulnerability in Wordpress Wordpress, published on 29 Jun 2016. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Cross-site scripting (XSS) vulnerability in the wp_get_attachment_link function in wp-includes/post-template.php in WordPress before 4.5.3 allows remote attackers to inject arbitrary web script or HTML via a crafted attachment name, a different vulnerability than CVE-2016-5833.

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

## Which versions are affected by CVE-2016-5834?

It affects 1 product.


Products: Wordpress Wordpress.

## How do I fix CVE-2016-5834?

Upgrade to a fixed version.

## Is CVE-2016-5834 being exploited?

There is no known exploitation of CVE-2016-5834 in the wild and no public exploit code.

## Other vulnerabilities in Wordpress Wordpress

- [CVE-2026-63030](https://insights.sbomify.com/CVE-2026-63030/): WordPress Core Interpretation Conflict (critical 9.8, exploited in the wild)
- [CVE-2026-87902](https://insights.sbomify.com/CVE-2026-87902/): WordPress Core Remote File Inclusion (high 8.1, exploited in the wild)
- [CVE-2026-60137](https://insights.sbomify.com/CVE-2026-60137/): WordPress Core SQL Injection (medium 5.9, exploited in the wild)
- [CVE-2012-2399](https://insights.sbomify.com/CVE-2012-2399/): Cross-site scripting in n/a (critical 10.0)
- [CVE-2012-2400](https://insights.sbomify.com/CVE-2012-2400/): Other in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-5834 and fix it if it is affected.

What it is: CVE-2016-5834 is a medium-severity cross-site scripting vulnerability in Wordpress Wordpress, published on 29 Jun 2016. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2016-5834 in the wild and no public exploit code.

Affected product: Wordpress Wordpress. 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-2016-5834/ (Markdown: https://insights.sbomify.com/CVE-2016-5834/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-5834
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-5834
- OSV: https://osv.dev/vulnerability/CVE-2016-5834

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-5834/
Summaries are generated and may contain mistakes; the official description above is the record.