CVE-2020-14971Network attack vector

Stored script execution via unescaped DHCP hostname

Published Jun 23, 2020 · Updated Aug 4, 2024

Stored cross-site scripting in Pi-hole through 5.0 allows remote authenticated users to execute script through a restored Teleporter archive. The Teleporter restore path accepts a modified dnsmasq.d dhcp-host value, and settings.php renders the restored hostname without HTML escaping. Administrative access to export and reimport the archive is required; successful exploitation runs attacker-supplied script in the Pi-hole administrator's browser.

CVSS severity7.8
High
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Pi-hole through 5.0 allows remote authenticated users to execute script through a restored Teleporter archive. The Teleporter restore path accepts a modified dnsmasq.d dhcp-host value, and settings.php renders the restored hostname without HTML escaping. Administrative access to export and reimport the archive is required; successful exploitation runs attacker-supplied script in the Pi-hole administrator's browser.

The record

CVE
CVE-2020-14971
Published
Jun 23, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-862, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 23, 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

4.6NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
7.8NVDCVSS:3.1/AV:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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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