Vulnerability · Published Jun 4, 2026 · Assigned by microsoft
CVE-2026-47644Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability
Medium 6.5
In plain English
A medium-severity injection in Copilot Chat (Microsoft Edge) from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.7%top 45.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
Improper neutralization of special elements in output used by a downstream component ('injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to disclose information over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Copilot Chat (Microsoft Edge) | - |
Weakness: CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
References
- Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability vendor-advisory, patch