CVE-2026-16889Published
Stored XSS via Pre-Login Notice Image Upload Serves Attacker HTML from Application Origin
Explicit identifiers and source references
These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.
CVE-2026-16889 · Microsoft / collected KEV context
cve-program · CVE-2026-16889
Related operational evidence
Explicit CVE identifiers- Stored XSS via Pre-Login Notice Image Upload Serves Attacker HTML from Application Origin · Newly collected advisory · 29 Oct 2026