---
id: "CVE-2026-77879"
kind: "vulnerability"
aliases: ["CVE-2026-77879"]
title: "Control Web Panel: SQL injection in loopback API lets attackers bypass authentication"
severity: "high"
cvss: 8.5
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["control-web-panel", "cwp", "hosting-panel", "infrastructure", "mysql", "self-hosted"]
not_affected_if: ["version-1.16-or-later"]
published_at: "2026-11-02T16:17:43+00:00"
first_seen_at: "2026-11-02T16:24:04+00:00"
updated_at: "2026-11-02T16:26:23+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77879", "first_seen_at": "2026-11-02T16:24:04+00:00"}]
---

# Control Web Panel: SQL injection in loopback API lets attackers bypass authentication

Control Web Panel (CWP) before webpanel_version 1.16 builds a MySQL query from the authorization_code and client_id parameters without escaping them. An attacker can inject SQL to read arbitrary database contents and forge the API's authentication result.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed CWP version against `webpanel_version` in the panel's configuration; versions below `1.16` are listed as affected.
- Confirm whether the loopback API authentication path is reachable from outside the server, which the sources do not state.

## Fix

- Move Control Web Panel to `webpanel_version` `1.16` or later.

## Timeline

- 2026-11-02T16:24:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-77879

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/control-web-panel-cwp-sql-injection-via-access-token-api

## From the sources

Control Web Panel (CWP) before webpanel_version 1.16 contains a SQL injection vulnerability in the loopback API authentication gate access_token(), which connects to MySQL as root and interpolates attacker-controlled values directly into its query. Attackers can inject SQL through the authorization_code and client_id parameters to read arbitrary database contents and forge the authentication result, bypassing the API's authentication check.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_