CVE-2026-97783

8.1High

Published 13 Oct 2026 · NVD status: Awaiting Analysis · AI triage by gemini-3.8-flash

8.1High

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required
Impact: High impact on confidentiality, integrity
Weakness: CWE-79

Impact

Attackers can run arbitrary script in users' browsers to hijack sessions or spoof actions on SharePoint. The attack requires tricking a user into clicking a malicious link or visiting a crafted page over the network.

Root cause

Improper input sanitization allows cross-site scripting (CWE-79) during web page generation in Microsoft Office SharePoint.

Affected systems

Versions not listed — check the vendor advisory.

CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Fix & remediation

Install the official Microsoft security update for your SharePoint version referenced in MSRC advisory CVE-2026-97783; no interim workaround is documented.

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD 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.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97783

Source: nvd.nist.gov/vuln/detail/CVE-2026-97783