CVE-2026-81509Published
nforwardauth: Unvalidated r parameter allows post-authentication open redirect
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-2026-81509 · Microsoft / collected KEV context
cve-program · CVE-2026-81509
Related operational evidence
Explicit CVE identifiers- Unvalidated r parameter allows post-authentication open redirect · Newly collected advisory · 26 Oct 2026
- nforwardauth: Unvalidated r parameter allows post-authentication open redirect · Advisory content revised · 26 Oct 2026