# CVE-2026-6106: 1Panel-dev MaxKB Public Chat static_headers_middleware.py StaticHeadersMiddleware cross site scripting

> Remote attackers can execute arbitrary scripts via the Public Chat interface, potentially compromising user sessions and data.

- **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:** 11 Apr 2026
- **Updated:** 13 Apr 2026
- **Also known as:** GHSA-4gvx-284h-fwmm

## What is CVE-2026-6106?

CVE-2026-6106 is a medium-severity cross-site scripting vulnerability in 1Panel-dev MaxKB, published on 11 Apr 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 detected in 1Panel-dev MaxKB up to 2.2.1. This vulnerability affects the function StaticHeadersMiddleware of the file apps/common/middleware/static_headers_middleware.py of the component Public Chat Interface. The manipulation of the argument Name results in cross site scripting. The attack may be launched remotely. The exploit is now public and may be used. Upgrading to version 2.8.0 is able to resolve this issue. The patch is identified as 026a2d623e2aa5efa67c4834651e79d5d7cab1da. It is recommended to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

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-2026-6106?


## How do I fix CVE-2026-6106?

No fix has been published for CVE-2026-6106 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-6106 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6106 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-6106 and fix it if it is affected.

What it is: CVE-2026-6106 is a medium-severity cross-site scripting vulnerability in 1Panel-dev MaxKB, published on 11 Apr 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-2026-6106 exists.

Affected product: 1Panel-dev MaxKB. 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-2026-6106/ (Markdown: https://insights.sbomify.com/CVE-2026-6106/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-6106
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-6106
- OSV: https://osv.dev/vulnerability/CVE-2026-6106

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-6106/
Summaries are generated and may contain mistakes; the official description above is the record.