7.1High
Microsoft Github Copilot Chat
CVE-2026-65675
No cwe for this issue in Visual Studio Code CoPilot Chat Extension allows an unauthorized attacker to bypass a security feature over a network.
What this means for your business
- It affects Microsoft Github Copilot Chat. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, but only after tricking someone into an action such as opening a file or a link.
- FIRST's prediction model gives it a 0.5% chance of attack attempts being seen in the next 30 days, ranking above 41% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Microsoft Github Copilot Chat, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Fastnexa security experts
Not sure if your company is exposed to CVE-2026-65675?
Tell us where you run Microsoft Github Copilot Chat and a Fastnexa penetration tester will check whether this flaw, or others like it, can be used against your websites, apps and network.
The full test is free for our first 10 founding clients until 31 December 2026. See the offer
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Scoring
- CVSS
- 7.1 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L- Weakness
- CWE-862
- Assigned by
- secure@microsoft.com
Dates
- Published
- 2026-08-11
- Last modified
- 2026-09-24
- Sources
- NVD
Affected products
- Microsoft Github Copilot Chatall versions
- Microsoft Visual Studio Code- 1.132.1
As listed in the NVD configuration data. Not a statement about your estate.