Description
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, configuration values from the /api/config endpoint are placed directly into HTML value="" attributes without escaping in settings-advanced.js, enabling HTML attribute injection. A double quote in any config value breaks out of the attribute context. JavaScript execution is blocked by the server's CSP (script-src 'self'), but injected attributes can alter element styling for UI redressing. The primary attack vector is importing a malicious teleporter backup, which bypasses per-field server-side validation. This vulnerability is fixed in 6.5.
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| web-interface | 6.0 | 6.4.1 |
References
Similar Threats
- Medium CVE-2026-33403
- Low CVE-2026-33404
- Low CVE-2026-33405
- Critical CVE-2026-33765
- Medium CVE-2026-26952
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