CVE-2020-11108Public exploitNetwork attack vector

Authenticated code execution via unquoted curl options

Published May 11, 2020 · Updated Aug 4, 2024

Unrestricted file upload in Pi-hole through 4.4 allows remote authenticated users to execute PHP code through the web interface. gravity_DownloadBlocklistFromUrl passes blocklist-derived text through unquoted curl-option variables, allowing an injected -o option to write PHP into the web directory. Web-administration access is sufficient on a default installation; code initially runs as www-data, while overwriting teleporter.php and invoking the permitted sudo pihole command grants root access.

CVSS severity8.8
High
EPSS probability78.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Pi-hole through 4.4 allows remote authenticated users to execute PHP code through the web interface. gravity_DownloadBlocklistFromUrl passes blocklist-derived text through unquoted curl-option variables, allowing an injected -o option to write PHP into the web directory. Web-administration access is sufficient on a default installation; code initially runs as www-data, while overwriting teleporter.php and invoking the permitted sudo pihole command grants root access.

The record

CVE
CVE-2020-11108
Published
May 11, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 11, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Web Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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