# CVE-2026-4951: Reflected Cross-Site Scripting in CustomerAdministration Portal (KundenManager)in VertiGIS WebOrderSystem


- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 23 Oct 2026
- **Updated:** 28 Oct 2026
- **Also known as:** GHSA-4jx9-cq4x-76w5

## What is CVE-2026-4951?

CVE-2026-4951 is a medium-severity vulnerability in VertiGIS Ltd. WebOrderSystem (KundenManager), published on 23 Oct 2026. 

### Official description

The CustomerAdministration portal (KundenManager) of VertiGIS WebOrderSystem allows privileged users to search for employees across all defined companies (user groups). The search term can be passed in the "searchValue" URL parameter, so the search is performed when a logged-in user opens such a URL. JavaScript code placed in this parameter is executed in the victim's browser. An unauthenticated attacker who knows the URL structure can craft a link that contains script code. The code runs if a privileged user who is currently logged into the portal opens the link. Because administrative users can change the passwords of other users, including administrators, without entering the old password, an attacker may be able to take over accounts or lock out other users. Version 7.0.8.6, the latest available at the time of testing, is affected. The vendor did not provide information about further affected versions.

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

## Which versions are affected by CVE-2026-4951?


## How do I fix CVE-2026-4951?

No fix has been published for CVE-2026-4951 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4951 being exploited?

There is no known exploitation of CVE-2026-4951 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4951 and fix it if it is affected.

What it is: CVE-2026-4951 is a medium-severity vulnerability in VertiGIS Ltd. WebOrderSystem (KundenManager), published on 23 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-4951 in the wild and no public exploit code.

Affected product: VertiGIS Ltd. WebOrderSystem (KundenManager). 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-2026-4951/ (Markdown: https://insights.sbomify.com/CVE-2026-4951/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4951
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4951
- OSV: https://osv.dev/vulnerability/CVE-2026-4951

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-4951/
Summaries are generated and may contain mistakes; the official description above is the record.