# CVE-2026-76558: WP Import Export Lite < 3.9.33 - Contributor+ Stored DOM XSS via Custom Field Names

> Contributors can inject malicious scripts via custom field names, leading to stored XSS attacks against administrators viewing the plugin's admin screens.

- **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
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 16 Sep 2026
- **Updated:** 17 Sep 2026
- **Also known as:** GHSA-rrjc-9rg9-cm6c

## What is CVE-2026-76558?

CVE-2026-76558 is a medium-severity cross-site scripting vulnerability in Unknown WP Import Export Lite, published on 16 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

The WP Import Export Lite WordPress plugin before 3.9.33 does not escape custom field names retrieved from the database before inserting them into the DOM of one of its administration screens, allowing users with a role as low as contributor to perform Stored XSS attacks which will trigger in the browser of a high privileged user, such as an administrator, viewing that screen.

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

## Which versions are affected by CVE-2026-76558?


## How do I fix CVE-2026-76558?

No fix has been published for CVE-2026-76558 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-76558 being exploited?

There is no known exploitation of CVE-2026-76558 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-76558 and fix it if it is affected.

What it is: CVE-2026-76558 is a medium-severity cross-site scripting vulnerability in Unknown WP Import Export Lite, published on 16 Sep 2026. 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-2026-76558 in the wild and no public exploit code.

Affected product: Unknown WP Import Export Lite. 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-2026-76558/ (Markdown: https://insights.sbomify.com/CVE-2026-76558/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-76558
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76558
- OSV: https://osv.dev/vulnerability/CVE-2026-76558

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-76558/
Summaries are generated and may contain mistakes; the official description above is the record.