# CVE-2026-47634: Microsoft SharePoint Server Spoofing Vulnerability CVE-2026-47634 is fixed in 2 products on 1 platform, first by KB5002874, released June 9, 2026. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent. - Web page: https://patchblox.com/security/cve/CVE-2026-47634 - Priority: Urgent - CVSS: 7.3 (Important) - EPSS: 0.0051 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation More Likely - Published: Jun 9, 2026 - Weakness: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47634 ## 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.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Microsoft SharePoint Server 2019 | | [KB5002874](https://patchblox.com/security/data/fix/microsoft/kb5002874.md) | Jun 9, 2026 | | Microsoft | Microsoft SharePoint Server Subscription Edition | | [KB5002873](https://patchblox.com/security/data/fix/microsoft/kb5002873.md) | Jun 9, 2026 | --- Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.