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CVE-20XX-?

CVE-2026-20945

4.6 MEDIUM 19% exploit odds Fix listed XSS Web app

What it is

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

At a glance

Exploitability: Can be exploited over the network with a low-privilege account, but needs a user to act. Limited direct impact.
Exploit odds: 19.1% chance of exploitation in the next 30 days (EPSS). Higher than most.
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-04-14 18:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-10-26 21:10 UTC Last updatedMost recent change to the record

Details

Published: 2026-04-14 18:16 UTC
Last modified: 2026-10-26 21:10 UTC
Exploit probability: 19.1% · EPSS, next 30 days
Weakness: CWE-79 · Cross-site scripting
Record status: Analyzed

Affected

Microsoft Sharepoint Server < 16.0.19725.20210
Microsoft Sharepoint Server 2016
Microsoft Sharepoint Server 2019

Attack profile CVSS 3.1 · 4.6

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: Required
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Meme: I wake up, CVE-2026-20945

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Fix and advisories

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20945

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20945

NVD record · CVE.org record