PatchTheCEVCVE-2026-57105: Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office Share
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HIGH 8.0WATCHLISTUPGRADE
CVE-2026-57105 is a high-severity flaw (CVSS 8.0) affecting sharepoint server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- High severity
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.0 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | Required |
| EPSS exploit chance | 0.6% (top 51%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2026-08-11 |
| Last modified | 2026-10-23 |
Publisher (CNA): Microsoft Corporation · Vendor: microsoft
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
microsoft sharepoint server UPGRADE
Affected: < 16.0.19725.20522 · 2019
Fixed in: 16.0.19725.20522
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy sharepoint-server || rpm -q sharepoint-server || sharepoint-server --version
2. UPGRADE to 16.0.19725.20522 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade sharepoint-server
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade sharepoint-server
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Exact fixes by distribution
Fedora 46 · fooyin · FIXED · 0.14.1-6.fc46 · FEDORA-2026-a597ed324c · source
sudo dnf upgrade --advisory=FEDORA-2026-a597ed324c
Install KB5002894 via Windows Update, then verify:
Get-HotFix -Id KB5002894
Install KB5002896 via Windows Update, then verify:
Get-HotFix -Id KB5002896
Microsoft SharePoint Server Subscription Edition · KB5002893 · FIXED · 16.0.19725.20522 · KB5002893 · source
Install KB5002893 via Windows Update, then verify:
Get-HotFix -Id KB5002893
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
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