# CVE-2026-78392: Link Library < 7.9.6 - Contributor+ Stored XSS via 'link_target' Parameter


- **Severity:** Medium 6.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 22 Oct 2026
- **Updated:** 22 Oct 2026
- **Also known as:** GHSA-rhhx-6v4c-mf5v

## What is CVE-2026-78392?

CVE-2026-78392 is a medium-severity vulnerability in Unknown Link Library, published on 22 Oct 2026. 

### Official description

The Link Library WordPress plugin before 7.9.6 does not sanitise and escape a link field before outputting it inside an attribute of a link preview, allowing users with the Contributor role and above to perform Stored Cross-Site Scripting attacks. The preview is generated without authentication and without checking whether the link has been published, so an unapproved submission is enough to reach any visitor who opens it.

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

## Which versions are affected by CVE-2026-78392?


## How do I fix CVE-2026-78392?

No fix has been published for CVE-2026-78392 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-78392 being exploited?

There is no known exploitation of CVE-2026-78392 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-78392 and fix it if it is affected.

What it is: CVE-2026-78392 is a medium-severity vulnerability in Unknown Link Library, published on 22 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-78392 in the wild and no public exploit code.

Affected product: Unknown Link Library. 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-2026-78392/ (Markdown: https://insights.sbomify.com/CVE-2026-78392/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-78392
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-78392
- OSV: https://osv.dev/vulnerability/CVE-2026-78392

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-78392/
Summaries are generated and may contain mistakes; the official description above is the record.