CVE-2026-50519: CWE-1188: Initialization of a Resource with an Insecure Default in Microsoft GitHub Copilot Chat
Initialization of a resource with an insecure default in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to disclose information over a network.
AI Analysis
Technical Summary
This vulnerability (CWE-1188) in GitHub Copilot Chat arises from initializing a resource with an insecure default configuration. This flaw can be exploited by an unauthorized attacker to gain access to sensitive information transmitted over the network. The issue affects version 1.0.0 of the product. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An attacker without privileges can potentially disclose sensitive information over the network due to insecure default initialization of a resource. The confidentiality of data is impacted (high confidentiality impact), but integrity and availability are not affected. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch to GitHub Copilot Chat version 1.0.0 as soon as possible. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50519 for detailed remediation instructions.
CVE-2026-50519: CWE-1188: Initialization of a Resource with an Insecure Default in Microsoft GitHub Copilot Chat
Description
Initialization of a resource with an insecure default in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to disclose information over a network.
CVSS v3.1
Score 6.5medium
Affected software
Microsoft
GitHub Copilot Chat
pkg:github/microsoft/github-copilot-chatRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-1188) in GitHub Copilot Chat arises from initializing a resource with an insecure default configuration. This flaw can be exploited by an unauthorized attacker to gain access to sensitive information transmitted over the network. The issue affects version 1.0.0 of the product. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An attacker without privileges can potentially disclose sensitive information over the network due to insecure default initialization of a resource. The confidentiality of data is impacted (high confidentiality impact), but integrity and availability are not affected. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch to GitHub Copilot Chat version 1.0.0 as soon as possible. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50519 for detailed remediation instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-04T19:00:41.292Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50519","vendor":"Microsoft"}]
Threat ID: 6a35b179daaa79a87d1ec8a4
Added to database: 06/19/2026, 21:15:37 UTC
Last enriched: 08/14/2026, 13:53:20 UTC
Last updated: 09/17/2026, 10:01:31 UTC
Views: 153
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