Type Vulnerability
Improper neutralisation of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorised attacker to perform spoofing over a network.
Microsoft
Microsoft Office SharePoint Spoofing Vulnerability
CVE-2026-109456
What this means
This is rated medium severity (4.6 out of 10). There is no confirmed exploitation of it yet.
Full vendor description
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.
Scoring and exploitation
4.6/ 10
CVSS 3.1 base scoreMedium
Exploitable over the network with a low-privilege account, but only if a user takes an action, such as opening a file or link. Low impact on confidentiality and integrity.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityLowAC:L
Privileges requiredLowPR:L
User interactionRequiredUI:R
ScopeUnchangedS:U
Impact
Longer bar: more harm
ConfidentialityLowC:L
IntegrityLowI:L
AvailabilityNoneA:N
- Not reported
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-79
References
1 link from the CVE record, grouped by site.
msrc.microsoft.com1 link