# CVE-2026-84437: OpenCart Autocomplete Workflow address.php cross site scripting

> Remote attackers can inject malicious scripts via the address field in OpenCart's autocomplete workflow, potentially compromising user sessions.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 2 Sep 2026
- **Updated:** 3 Sep 2026
- **Also known as:** GHSA-x42m-4578-3cr2

## What is CVE-2026-84437?

CVE-2026-84437 is a medium-severity cross-site scripting vulnerability in OpenCart, published on 2 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A vulnerability was found in OpenCart 4.1.0.3/4.1.0.4. The impacted element is an unknown function of the file catalog/controller/account/address.php of the component Autocomplete Workflow. The manipulation of the argument address_1 results in cross site scripting. It is possible to launch the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-84437?


## How do I fix CVE-2026-84437?

No fix has been published for CVE-2026-84437 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-84437 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-84437 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-84437 and fix it if it is affected.

What it is: CVE-2026-84437 is a medium-severity cross-site scripting vulnerability in OpenCart, published on 2 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-84437 exists.

Affected product: OpenCart. 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-2026-84437/ (Markdown: https://insights.sbomify.com/CVE-2026-84437/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-84437
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-84437
- OSV: https://osv.dev/vulnerability/CVE-2026-84437

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-84437/
Summaries are generated and may contain mistakes; the official description above is the record.