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PatchSiren cyber security CVE debrief

CVE-2026-45482 Microsoft CVE debrief

CVE-2026-45482 is a HIGH severity vulnerability with a CVSS score of 8.4. It was published on 2026-06-09T17:17:22.587Z and last modified on 2026-06-09T19:32:51.440Z. The vulnerability is related to an improper limitation of a pathname to a restricted directory, also known as path traversal, in GitHub Copilot and Visual Studio Code. This allows an unauthorized attacker to bypass a security feature locally. The CVE is currently awaiting analysis and is tracked by various sources including [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-45482) and [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-45482). For more information, refer to [ref-4](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45482).

Vendor
Microsoft
Product
Microsoft Visual Studio Code CoPilot Chat Extension
CVSS
HIGH 8.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-07-09
Advisory published
2026-06-09
Advisory updated
2026-07-09

Who should care

Users of GitHub Copilot and Visual Studio Code should be aware of this vulnerability and take necessary precautions to mitigate the risk.

Technical summary

The vulnerability is caused by an improper limitation of a pathname to a restricted directory, also known as path traversal. This allows an unauthorized attacker to bypass a security feature locally.

Defensive priority

HIGH

Recommended defensive actions

  • Users should update to the latest version of GitHub Copilot and Visual Studio Code to ensure they have the latest security patches.
  • Users should be cautious when using GitHub Copilot and Visual Studio Code to avoid potential security risks.

Evidence notes

The vendor of this product is currently listed as Unknown Vendor. However, there is evidence suggesting that the vendor might be Microsoft.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-45482 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-45482

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-45482 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-45482

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.