---
id: "CVE-2026-77877"
kind: "vulnerability"
aliases: ["CVE-2026-77877"]
title: "Control Web Panel: loopback API skips authentication, exposing root-level routes"
severity: "high"
cvss: 8.6
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["control-web-panel", "linux-servers", "runtime", "self-hosted"]
not_affected_if: ["not-installed", "patched-1.30-or-later"]
published_at: "2026-11-02T16:17:43+00:00"
first_seen_at: "2026-11-02T16:24:04+00:00"
updated_at: "2026-11-02T16:26:22+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77877", "first_seen_at": "2026-11-02T16:24:04+00:00"}]
---

# Control Web Panel: loopback API skips authentication, exposing root-level routes

Control Web Panel (CWP) before version 1.30 exposes root-privileged API routes on its loopback service without requiring an access token. An attacker who can reach that loopback API can restore databases, manage users and perform other root-level actions.

_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 configuration; anything below `1.30` is affected.
- Confirm whether the loopback API service is reachable from untrusted users or processes on the host.

## Fix

- Upgrade Control Web Panel to `1.30` or later.

## Timeline

- 2026-11-02T16:24:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-77877

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/control-web-panel-cwp-unauthenticated-loopback-api-root-access

## From the sources

Control Web Panel (CWP) before webpanel_version 1.30 contains a missing authentication vulnerability that allows attackers able to reach the loopback API service to invoke root-privileged API routes without presenting an access token. Attackers can access endpoints such as /v1/restoredatabase/, /generaluser/, /last_access/, /valid_user/, /valid_token/, and /user_panel_dashboard/ to perform unauthorized actions with root privileges.

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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_