CVE-2026-33403
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, a reflected DOM-based XSS vulnerability in taillog.js allows an unauthenticated attacker to inject arbitrary HTML into the Pi-hole admin interface by crafting a malicious URL. The file query parameter is interpolated into an innerHTML assignment without escaping. Because the Content-Security-Policy is missing the form-action directive, injected <form> elements can exfiltrate credentials to an external origin. This vulnerability is fixed in 6.5.
- Affected products
- Pi-Hole
- Pi-hole Web Interface
- ≤ 6.4.1
- Fix
- Available
- CVSS 3.1
- 6.1 MEDIUM
- EPSS
- 0.2% (9th percentile)
- Weakness
- CWE-79
- NVD status
- Analyzed
- Published
- 2026-04-06
No indexed exploits for CVE-2026-33403 yet
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