Type Vulnerability
The vulnerability associated with this CVE was fixed in July, however was inadvertently not included with that release.
Microsoft · Cross-site scripting
Cross-site Scripting in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a netw…
CVE-2026-97783
What this means
This is rated high severity (8.1 out of 10). There is no confirmed exploitation of it yet. Ask IT whether Microsoft Sharepoint Server is in your estate, and treat that as the priority.
Full vendor description
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Scoring and exploitation
8.1/ 10
CVSS 3.1 base scoreHigh
Exploitable over the network without any account, but only if a user takes an action, such as opening a file or link. High impact on confidentiality and integrity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityLowAC:L
Privileges requiredNonePR:N
User interactionRequiredUI:R
ScopeUnchangedS:U
Impact
Longer bar: more harm
ConfidentialityHighC:H
IntegrityHighI:H
AvailabilityNoneA:N
- ~0.5% estimated chance of attack in 30 daysModel estimate (): a probability signal, not confirmed exploitation
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-79
Affected products ()
- Microsoft Sharepoint Server
Show the raw CPE strings (1)
- cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*
References
1 link from the CVE record, grouped by site; the vendor's advisory comes first.
msrc.microsoft.com1 linkVendor advisory
- CVE-2026-97783 (opens in a new tab)Vendor Advisory