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TI-2026-25802 Aliases CVE-2026-33405

Pi-hole has a Stored HTML Injection in queries.js

Priority MEDIUM 55CWE-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 · None
Fix status
Fixed

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

Summary

Pi-hole Admin Interface is a web interface for managing Pi-hole, a network-level ad and internet tracker blocking application. From 6.0 to before 6.5, the formatInfo() function in queries.js renders data.upstream, data.client.ip, and data.ede.text into HTML without escaping when a user expands a query row in the Query Log, enabling stored HTML injection. JavaScript execution is blocked by the server's CSP (script-src 'self'). The same fields are properly escaped in the table view (rowCallback), confirming the omission was an oversight. This vulnerability is fixed in 6.5.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00178 7th percentileScored 2026-11-07
Fix Fixed web (pi-hole): 6.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Pi-holeweb6.0 to before 6.56.5Patch availableCNA
  • web VendorPi-hole Affected 6.0 to before 6.5 Fixed in 6.5 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:pi-hole:web_interface:*:*:*:*:*:*:*:*6.0 – 6.4.1VulnerablePi-hole
  • cpe:2.3:a:pi-hole:web_interface:*:*:*:*:*:*:*:* Versions 6.0 – 6.4.1 Vulnerable ·Pi-hole

Remediation

  • Fix · CNA web (pi-hole) Fixed in 6.5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-33405

References

Advisory 1

  • TI-2023-09443 Improper session handling of "Remember me for 7 days" functionality CVSS 3.1HIGH 8.8
  • TI-2025-36756 Pi-hole Admin Interface vulnerable to HTTP response header injection via CRLF injection CVSS 3.1HIGH 8.2
  • TI-2026-25803 Pi-hole has a Stored HTML attribute injection CVSS 3.1MEDIUM 6.1
  • TI-2026-25801 Pi-hole has a Stored XSS / HTML injection in the Network page/Dashboard CVSS 3.1MEDIUM 6.1
  • TI-2026-25800 Pi-hole has a Reflected XSS / HTML injection in taillog.js CVSS 3.1MEDIUM 6.1
  • TI-2025-33477 Pi-hole Admin Interface vulnerable to cross-site scripting via malformed URL path on 404 error page CVSS 4.0MEDIUM 5.1
See all 15 →

Sources

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