CVE-2026-47634Important
Microsoft SharePoint Server Spoofing Vulnerability
Assessment
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.
- Severity
- Important
- CVSS base score
- 7.3CVSS:3.1/
AV:N/ AC:L/ PR:L/ UI:R/ S:U/ C:H/ I:H/ A:N/ E:U/ RL:O/ RC:C - Impact
- Spoofing
- EPSS, next 30 days
- 0.5%Higher than 42.4% of scored CVEs · FIRST model run 29 Sep 2026 · about EPSS
- Public exploit code
- No Nuclei template lists it
- Exploitability
- Exploitation More Likely
- Publicly disclosed
- No
- Customer action
- Required: apply the update
- Component
- Microsoft Office SharePoint
- Weakness
- CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
- Issued by
- Microsoft
- Published
- 9 Jun 2026 · June 2026
- Last revised
- 9 Jun 2026
Updates that fix it
2 KBs| KB | Type | Restart | Applies to | Other CVEs |
|---|---|---|---|---|
| KB5002873 | Security Update | — | Microsoft SharePoint Server Subscription Edition | All CVEs in KB5002873 |
| KB5002874 | Security Update | — | Microsoft SharePoint Server 2019 | All CVEs in KB5002874 |