# CVE-2026-54645: CubeCart: Stored XSS in Product Description Editor via Global Sanitizer Bypass

> Administrators can inject persistent JavaScript into product descriptions, leading to session hijacking or malicious actions when viewed by visitors or other admins.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **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:** 17 Sep 2026
- **Updated:** 22 Sep 2026
- **Also known as:** GHSA-43f6-gfcf-wj9c

## What is CVE-2026-54645?

CVE-2026-54645 is a medium-severity cross-site scripting vulnerability in cubecart v6, published on 17 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

CubeCart is an ecommerce software solution. Prior to 6.7.5, admin/sources/products.index.inc.php reads the description, description_short, and spec_copy rich-text fields from $GLOBALS['RAW']['POST'] and removes only script elements before the values are stored and rendered through Smarty templates. An administrator with product-editing rights can store event-handler attributes, SVG content, or javascript: URIs that bypass this filter, causing persistent JavaScript execution when a storefront visitor or another administrator views the product content and enabling session exposure or unauthorized browser-context actions. This issue is fixed in version 6.7.5.

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

## Which versions are affected by CVE-2026-54645?


## How do I fix CVE-2026-54645?

No fix has been published for CVE-2026-54645 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-54645 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54645 exists.

Public exploit code:

- CubeCart 6.7.4 - Stored XSS (exploitdb)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-54645 and fix it if it is affected.

What it is: CVE-2026-54645 is a medium-severity cross-site scripting vulnerability in cubecart v6, published on 17 Sep 2026. An attacker needs administrator access to exploit it, 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-2026-54645 exists.

Affected product: cubecart v6. 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-2026-54645/ (Markdown: https://insights.sbomify.com/CVE-2026-54645/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-54645
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-54645
- OSV: https://osv.dev/vulnerability/CVE-2026-54645

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-54645/
Summaries are generated and may contain mistakes; the official description above is the record.