What is CVE-2026-45644?

CVE-2026-45644 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Microsoft Live Share Canvas SDK Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-45644 cover?

CVE-2026-45644 covers the following CVE IDs: CVE-2026-45644. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-45644?

CVE-2026-45644 has a CVSS v3 base score of 8.0, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-45644?

CVE-2026-45644 affects 1 product, including: Microsoft Live Share Canvas SDK.

CVE-2026-45644HighCVSS 8.0

Microsoft Live Share Canvas SDK Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

June 10, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-45644 →

📋 Description

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Live Share Canvas SDK allows an authorized attacker to elevate privileges over a network.

🎯 Affected products1

Microsoft Live Share Canvas SDK

✅ Remediation

KBRelease Notes (Security Update) — fixed build 1.4.2

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45644
patchhttps://www.npmjs.com/package/@microsoft/live-share-canvas