# CVE-2026-50519: Microsoft Visual Studio Code CoPilot Chat Security Feature Bypass Vulnerability

> An insecure default in GitHub Copilot Chat allows attackers to bypass security features and disclose information over the network.

- **Severity:** Medium 6.5 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 19 Jun 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-2gq4-362c-56w9

## What is CVE-2026-50519?

CVE-2026-50519 is a medium-severity vulnerability in Microsoft GitHub Copilot Chat, published on 19 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official 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.

Weakness: CWE-1188 (Initialization of a Resource with an Insecure Default)

## Which versions are affected by CVE-2026-50519?

It affects 1 product.


Products: Microsoft Github Copilot Chat.

## How do I fix CVE-2026-50519?

No fix has been published for CVE-2026-50519 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-50519 being exploited?

There is no known exploitation of CVE-2026-50519 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft GitHub Copilot Chat

- [CVE-2025-62222](https://insights.sbomify.com/CVE-2025-62222/): Agentic AI and Visual Studio Code Remote Code Execution Vulnerability (high 8.8)
- [CVE-2026-65675](https://insights.sbomify.com/CVE-2026-65675/): CoPilot Chat Security Feature Bypass Vulnerability (high 7.1)
- [CVE-2025-62449](https://insights.sbomify.com/CVE-2025-62449/): Microsoft Visual Studio Code CoPilot Chat Extension Security Feature Bypass Vulnerability (medium 6.8)
- [CVE-2026-23653](https://insights.sbomify.com/CVE-2026-23653/): GitHub Copilot and Visual Studio Code Information Disclosure Vulnerability (medium 5.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-50519 and fix it if it is affected.

What it is: CVE-2026-50519 is a medium-severity vulnerability in Microsoft GitHub Copilot Chat, published on 19 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-50519 in the wild and no public exploit code.

Affected product: Microsoft GitHub Copilot Chat. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-50519/ (Markdown: https://insights.sbomify.com/CVE-2026-50519/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-50519
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-50519
- OSV: https://osv.dev/vulnerability/CVE-2026-50519

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-50519/
Summaries are generated and may contain mistakes; the official description above is the record.