CVE-2026-50510
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedImproper restriction of names for files and other resources in Github Copilot allows an unauthorized attacker to execute code locally.
In the news
Third-party coverage- Microsoft July 2026 Patch Tuesday fixes massive 570 flaws, 3 zero-days
- Microsoft CVE Summary - Bleeping Computer
Surfaced from public web coverage — external links open in a new tab.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceGitHub Copilot improperly restricts file and resource names, allowing an attacker to craft malicious file names that bypass validation and result in local code execution. This appears to be an input validation vulnerability where Copilot's file handling logic fails to properly sanitize or restrict resource names before processing them.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 1.13.0-251CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check installed Copilot version in your IDE or editorOpen your IDE/editor (VS Code, Visual Studio, JetBrains, etc.), navigate to the extensions or add-ons section, find GitHub Copilot, and view the installed version numberAffected if The version number is less than 1.13.0-251 (e.g., 1.13.0-250 or earlier)
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Check Copilot CLI version if installedOpen a terminal and run: npx @githubnext/github-copilot-cli --version OR copilot --version, depending on how it was installedAffected if The CLI version reported is less than 1.13.0-251
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Verify Copilot extension/plugin version in Visual StudioIn Visual Studio, go to Extensions > Manage Extensions > Installed, find GitHub Copilot, and note the versionAffected if The version shown is below 1.13.0-251
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Identify if file creation or code generation features are activeCheck if Copilot is enabled for your session or project by looking at the Copilot status icon in your editor's status bar or settings panelAffected if Copilot is actively enabled and processing suggestions in your current session
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Audit recent Copilot-generated file names in workspaceReview your project directory for any files with unusual names, special characters, path traversal patterns (..), or unexpected extensions that may have been created via Copilot suggestionsAffected if Files exist with names containing path traversal sequences or unusual characters that were not manually created
You are affected if your installed Copilot version is less than 1.13.0-251 and you have Copilot enabled to process or generate files in your development environment.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor data1.13.0-251
Apply proper input validation and sanitization to all file and resource names processed by Copilot, using allowlist validation for permitted characters and rejecting potentially dangerous names that could enable code execution or path traversal.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-50510 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-50510 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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