CVE catalog
CVE-2026-47645
Url redirection to untrusted site ('open redirect') in…
Url redirection to untrusted site ('open redirect') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to elevate privileges over a network.
- Severity
- High · CVSS 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.76% · Oct 27, 2026
Reported versions and fixes
Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.
Version impact has not been established. The original provider fields are retained below.
Provider details and historical evidence
Original provider fields
{
"package_releases": [],
"fixed_versions": [],
"distribution_packages": [
{
"name": "365_copilot",
"ecosystem": "cpe",
"fixed_version": ""
},
{
"name": "365_copilot",
"ranges": [],
"ecosystem": "cpe",
"fixed_version": "",
"provider_record_id": "NVD-CVE-2026-47645"
}
]
}OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
Observed: