# CVE-2026-45622: Vvveb: Unauthenticated reflected XSS in public product return form via customer_order_id

> Unauthenticated attackers can execute arbitrary JavaScript in victims' browsers via the customer_order_id parameter in the public product return form.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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:** No
- **Published:** 15 May 2026
- **Updated:** 15 May 2026
- **Also known as:** GHSA-3xwm-8f6m-cfc6

## What is CVE-2026-45622?

CVE-2026-45622 is a medium-severity cross-site scripting vulnerability in givanz Vvveb, published on 15 May 2026. 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

Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.3, there is an unauthenticated reflected cross-site scripting (XSS) issue in the public product return form in Vvveb CMS. The customer_order_id POST parameter is inserted into the Order %s not found! error message when the order lookup fails, and that message is rendered in the frontend template without HTML escaping. As a result, attacker-controlled HTML/JavaScript executes in the submitting user's browser. This vulnerability is fixed in 1.0.8.3.

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

## Which versions are affected by CVE-2026-45622?


## How do I fix CVE-2026-45622?

No fix has been published for CVE-2026-45622 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-45622 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45622 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-45622 and fix it if it is affected.

What it is: CVE-2026-45622 is a medium-severity cross-site scripting vulnerability in givanz Vvveb, published on 15 May 2026. An attacker can exploit it over the internet without logging in, 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-2026-45622 exists.

Affected product: givanz Vvveb. 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-2026-45622/ (Markdown: https://insights.sbomify.com/CVE-2026-45622/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-45622
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-45622
- OSV: https://osv.dev/vulnerability/CVE-2026-45622

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-45622/
Summaries are generated and may contain mistakes; the official description above is the record.