---
title: "CVE-2021-32706: (Authenticated) Remote Code Execution… | CubePath"
description: "Pi-hole's Web interface provides a central location to manage a Pi-hole instance and review performance statistics. Prior to Pi-hole Web interface…"
language: en
source: https://cubepath.com/security/cve/CVE-2021-32706
---

# CVE-2021-32706: (Authenticated) Remote Code Execution… | CubePath

## Description

Pi-hole's Web interface provides a central location to manage a Pi-hole instance and review performance statistics. Prior to Pi-hole Web interface version 5.5.1, the \`validDomainWildcard\` preg\_match filter allows a malicious character through that can be used to execute code, list directories, and overwrite sensitive files. The issue lies in the fact that one of the periods is not escaped, allowing any character to be used in its place. A patch for this vulnerability was released in version 5.5.1.

Official description from the CVE record, published by GitHub\_M. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-32706)

## Key data

### CVSS 3.1 High 7.6

Score published by GitHub\_M in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

| Metric                 | Value     | What it means                                                                       |
| ---------------------- | --------- | ----------------------------------------------------------------------------------- |
| Attack vector          | Network   | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity      | Low       | No special conditions are needed. The attack can be repeated at will.               |
| Privileges required    | Low       | A basic user account is needed.                                                     |
| User interaction       | None      | No action from any user is needed.                                                  |
| Scope                  | Unchanged | The impact stays within the vulnerable component.                                   |
| Confidentiality impact | Low       | Limited effect on the secrecy of data.                                              |
| Integrity impact       | Low       | Limited effect on the trustworthiness of data.                                      |
| Availability impact    | High      | Serious or total effect on availability.                                            |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.60181 (60.2% probability)

Percentile

99.1%

Scores of

Nov 10, 2026

Model

v2026.06.15

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-94](https://cwe.mitre.org/data/definitions/94.html) Improper Control of Generation of Code

## Affected products

Products listed in the CVE record, as the CNA published them.

- pi-hole AdminLTE

  - affected: < 5.5.1

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [github.com/pi-hole/AdminLTE/security/advisories/GHSA-5cm9-6…](https://github.com/pi-hole/AdminLTE/security/advisories/GHSA-5cm9-6p3m-v259)
- [github.com/pi-hole/AdminLTE/releases/tag/v5.5.1](https://github.com/pi-hole/AdminLTE/releases/tag/v5.5.1)

## Timeline

1. ID reserved May 12, 2021
2. Record published Aug 4, 2021
3. Record last updated Aug 3, 2024

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:04 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)