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

mediumCVSS 6.5CVE-2026-50519

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.

CSIRTS triage

vendor: Microsoft product: Visual Studio Code Authentication bypass

What: This vulnerability allows an unauthorized attacker to disclose information over a network.
Who is affected: Users of GitHub Copilot and Visual Studio Code are affected.
Urgency: Remediation is urgent due to the medium severity and potential for exploitation.
Action: Apply the security update provided by Microsoft.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 6.5
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50519

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-505190.51% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 40% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-50519	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownMultiple Vulnerabilities in Microsoft Products (June 22, 2026)cert-fr-avis

Recent advisories for Microsoft Visual Studio

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-45482: Microsoft Visual Studio Code CoPilot Chat Security Feature Bypass Vulnerabilitymsrc · 2026-06-09
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