# CVE-2026-34246: CtrlPanel: Stored XSS in Admin Role Management via Unescaped DataTable HTML Output

> Stored XSS in CtrlPanel admin role management allows attackers to hijack sessions and escalate privileges via unescaped HTML output.

- **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:** 19 May 2026
- **Updated:** 20 May 2026
- **Also known as:** GHSA-wpqj-xwhq-2mmh

## What is CVE-2026-34246?

CVE-2026-34246 is a medium-severity cross-site scripting vulnerability in Ctrlpanel-gg panel, published on 19 May 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

CtrlPanel is open-source billing software for hosting providers. Versions 1.1.1 and prior contain a Stored Cross-Site Scripting (XSS) vulnerability exists in the admin role management interface. In app/Http/Controllers/Admin/RoleController.php, the datatable() method interpolates $role->name and $role->color directly into a <span> element's HTML and style attribute without sanitization, and the chained .rawColumns(['actions', 'name']) call instructs DataTables to render the name column as raw HTML, bypassing automatic output escaping. An admin with role creation or edit permissions can inject a payload such as <img src=x onerror="alert('XSS_POC')"> into the name or color fields, which is persisted to the database and executes in the browser of every admin who loads the /admin/roles page. This enables session hijacking via cookie theft, credential harvesting through fake login prompts or keyloggers, lateral privilege escalation by performing admin actions on behalf of victims, and a persistent backdoor that re-executes on every page load until the malicious role record is removed. This issue has been resolved in version 1.2.0.

Weakness: CWE-80 (Improper Neutralization of Script-Related HTML Tags in a Web Page), CWE-116 (Improper Encoding or Escaping of Output)

## Which versions are affected by CVE-2026-34246?


## How do I fix CVE-2026-34246?

No fix has been published for CVE-2026-34246 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-34246 being exploited?

There is no known exploitation of CVE-2026-34246 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-34246 and fix it if it is affected.

What it is: CVE-2026-34246 is a medium-severity cross-site scripting vulnerability in Ctrlpanel-gg panel, published on 19 May 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-34246 in the wild and no public exploit code.

Affected product: Ctrlpanel-gg panel. 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-2026-34246/ (Markdown: https://insights.sbomify.com/CVE-2026-34246/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-34246
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-34246
- OSV: https://osv.dev/vulnerability/CVE-2026-34246

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-34246/
Summaries are generated and may contain mistakes; the official description above is the record.