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TI-2021-10161 Aliases CVE-2021-29448

Stored DOM XSS in Pi-hole Admin Web Interface

Priority LOW 39CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

Pi-hole is a Linux network-level advertisement and Internet tracker blocking application. The Stored XSS exists in the Pi-hole Admin portal, which can be exploited by the malicious actor with the network access to DNS server. See the referenced GitHub security advisory for patch details.

Why it matters now

EPSS 0.00692 53rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Pi-holeAdminLTEup to 5.4—No fix listedCNA
  • AdminLTE VendorPi-hole Affected up to 5.4 Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:pi-hole:ftldns:5.7:*:*:*:*:*:*:*5.7VulnerablePi-hole
cpe:2.3:a:pi-hole:pi-hole:5.2.4:*:*:*:*:*:*:*5.2.4VulnerablePi-hole
cpe:2.3:a:pi-hole:web_interface:*:*:*:*:*:*:*:*before 5.5VulnerablePi-hole
  • cpe:2.3:a:pi-hole:ftldns:5.7:*:*:*:*:*:*:* Versions 5.7 Vulnerable ·Pi-hole
  • cpe:2.3:a:pi-hole:pi-hole:5.2.4:*:*:*:*:*:*:* Versions 5.2.4 Vulnerable ·Pi-hole
  • cpe:2.3:a:pi-hole:web_interface:*:*:*:*:*:*:*:* Versions before 5.5 Vulnerable ·Pi-hole

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-29448

References

Exploit 1

  • TI-2026-28731 Pi-hole FTL remote code execution via newline injection in dns.interface configuration CVSS 4.0HIGH 8.7
  • TI-2026-27638 Pi-hole FTL affected by Remote Code Execution (RCE) via dhcp.hosts Newline Injection CVSS 3.1HIGH 8.8
  • TI-2026-27637 Pi-hole FTL affected by Remote Code Execution (RCE) via dhcp.leaseTime Newline Injection CVSS 3.1HIGH 8.8
  • TI-2026-27636 Pi-hole FTL affected by Remote Code Execution (RCE) via dns.hostRecord Newline Injection CVSS 3.1HIGH 8.8
  • TI-2026-27635 Pi-hole FTL affected by Remote Code Execution (RCE) via dns.cnameRecords Newline Injection CVSS 3.1HIGH 8.8
  • TI-2026-27634 Pi-hole FTL affected by Remote Code Execution (RCE) via dns.upstreams Newline Injection CVSS 3.1HIGH 8.8
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences