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TI-2021-12459 Aliases CVE-2021-32793

Stored XSS Vulnerability in the Pi-hole Webinterface

Priority LOW 27CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · High
Fix status
Fixed

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

Summary

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 function to add domains to blocklists or allowlists is vulnerable to a stored cross-site-scripting vulnerability. User input added as a wildcard domain to a blocklist or allowlist is unfiltered in the web interface. Since the payload is stored permanently as a wildcard domain, this is a persistent XSS vulnerability. A remote attacker can therefore attack administrative user accounts through client-side attacks. Pi-hole Web Interface version 5.5.1 contains a patch for this vulnerability.

Why it matters now

EPSS 0.00791 56th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed AdminLTE (pi-hole): 5.5.1

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
Pi-holeAdminLTEbefore 5.5.15.5.1Patch availableCNA
  • AdminLTE VendorPi-hole Affected before 5.5.1 Fixed in 5.5.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:pi-hole:pi-hole:*:*:*:*:*:*:*:*before 5.5.1VulnerablePi-hole
  • cpe:2.3:a:pi-hole:pi-hole:*:*:*:*:*:*:*:* Versions before 5.5.1 Vulnerable ·Pi-hole

Remediation

  • Fix · CNA AdminLTE (pi-hole) Fixed in 5.5.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-32793

References

Exploit 1

Advisory 1

  • TI-2020-07073 Pi-hole Web v4.3.2 (aka AdminLTE) allows Remote Code Execution by privileged dashboard… KEVCVSS 3.1HIGH 7.2
  • TI-2020-08981 The Gravity updater in Pi-hole through 4.4 allows an authenticated adversary to upload… CVSS 3.1HIGH 8.8
  • TI-2026-36901 Pi-hole: Local privilege escalation from `pihole` user to root via `/etc/pihole/logrotate` CVSS 3.1HIGH 8.8
  • TI-2024-22701 Pi-hole Blind Server-Side Request Forgery (SSRF) vulnerability can lead to Remote Code Execution (RCE) CVSS 3.1HIGH 8.8
  • TI-2021-12374 (Authenticated) Remote Code Execution Possible in Web Interface 5.5 CVSS 3.1HIGH 8.8
  • TI-2024-18806 Pihole Authenticated Arbitrary File Read with root privileges CVSS 3.1HIGH 7.6
See all 18 →

Sources

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