Vulnerability · Published Jun 9, 2026 · Assigned by microsoft
CVE-2026-47634Microsoft SharePoint Server Spoofing Vulnerability
High 7.3
In plain English
A high-severity injection in Microsoft SharePoint Server 2019 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)0.5%top 56.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper neutralization of special elements in output used by a downstream component ('injection') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 – before 16.0.10417.20153 |
| Microsoft | Microsoft SharePoint Server Subscription Edition | 16.0.0 – before 16.0.19725.20384 |
Weakness: CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
References
- Microsoft SharePoint Server Spoofing Vulnerability vendor-advisory, patch