Vulnerability · Published Jun 9, 2026 · Assigned by microsoft
CVE-2026-45644Microsoft Live Share Canvas SDK Elevation of Privilege Vulnerability
High 8.0
In plain English
A high-severity cross-site scripting in Microsoft Live Share Canvas SDK from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities).
Severity (CVSS 3.1)8.0High
Exploit odds (30 days)0.6%top 53.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Live Share Canvas SDK | 1.0.0 – before 1.4.2 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Microsoft Live Share Canvas SDK Elevation of Privilege Vulnerability vendor-advisory, patch