CVE-2026-33403 — Reflected XSS / HTML Injection in Pi-hole Web (taillog.js)
Summary Field Value CVE ID CVE-2026-33403 Advisory GHSA-7xqw-r9pr-qv59 Vulnerability Type Reflected DOM-based XSS / HTML Injection Attack Vector Network CVSS v3.1 Base Score 6.1 (Medium) CVSS v3.1 Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Affected Versions Pi-hole Web v6.0 through v6.4.1 Patched Version v6.5 Discovered By Mohammed Alzahrani, andrejtomci, n1rwhex Description Pi-hole Web versions 6.0 through 6.4.1 contain a reflected XSS / HTML injection vulnerability in scripts/js/taillog.js. The file query parameter is used in an error message that is inserted directly into the DOM via innerHTML without sanitization or escaping. ...