PatchTheCVEsharepoint server vulnerabilities and fixes
Recent CVEs affecting sharepoint server, with upgrade or downgrade steps. 4 tracked.
sharepoint server has 4 tracked vulnerabilities, 0 critical and 1 exploited in the wild (CISA KEV). A fixed release or vendor patch exists for 4. Most recent: 2026-08-11. Highest priority: CVE-2026-65660 (score 81/100).
- CVE-2026-70321 HIGH 8.8 UPGRADE Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code
- CVE-2026-70326 HIGH 8.8 UPGRADE Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to elevate pri
- CVE-2026-57105 HIGH 8.0 UPGRADE Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office Share
- CVE-2026-65660 HIGH 8.8 EXPLOITED UPGRADE Microsoft SharePoint Code Injection Vulnerability
FAQ
How do I fix sharepoint server vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is sharepoint server being exploited right now?
Yes: 1 sharepoint server CVE is on the CISA Known Exploited Vulnerabilities list, so patch it first.
Which sharepoint server CVE should I patch first?
CVE-2026-65660 currently ranks highest (81/100): Microsoft SharePoint Code Injection Vulnerability.