What is CVE-2024-26251?

CVE-2024-26251 is a medium-severity vulnerability in Microsoft Sharepoint Server 2016, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2024-04-09.

How severe is CVE-2024-26251?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Is CVE-2024-26251 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Microsoft Sharepoint Server 2016

CVE-2024-26251

Microsoft SharePoint Server Spoofing Vulnerability

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-04-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.014 (71.4th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Microsoft Sharepoint Server 2016 — versions 16.0.0.0
Microsoft Sharepoint Server 2019 — versions 16.0.0
Microsoft Sharepoint Server Subscription Edition — versions 16.0.0
Microsoft Sharepoint Server — versions 2016, 2019

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

kaje11/CVEs

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2024-26251 (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2024-26251?: CVE-2024-26251 is a medium-severity vulnerability in Microsoft Sharepoint Server 2016, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2024-04-09.
How severe is CVE-2024-26251?: Medium severity. CVSS v3 base score is 6.8 out of 10.
Is CVE-2024-26251 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.