CVE-2026-57101
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 neutralization of input during web page generation ('cross-site scripting') in Visual Studio Code allows an unauthorized attacker to bypass a security feature 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 confidenceCross-site scripting (XSS) vulnerability in Visual Studio Code allows an unauthorized attacker to bypass a security feature through improper neutralization of input during web page generation. The attack is characterized as local, suggesting the attacker must have some form of local access to the system running VS Code.
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>= 1.0.0, < 1.128.1CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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 Visual Studio Code installed versionOpen VS Code and go to Help > About, or run `code --version` from command lineAffected if The version shown is >= 1.0.0 and < 1.128.1
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Confirm VS Code editionVerify you are running Microsoft Visual Studio Code (not VS Code Insiders or open-source variants) - check the application title bar or About dialogAffected if Running Microsoft Visual Studio Code Desktop edition within the affected version range
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Understand attack vectorThis is a local XSS vulnerability - the attacker needs local access to inject malicious input that VS Code improperly neutralizes during web page generationAffected if The environment allows local users or processes to influence web content that VS Code renders
You are affected if your installed Microsoft Visual Studio Code version falls within 1.0.0 to 1.128.0 (exclusive of 1.128.1) and your local environment permits injection of unsanitized input into web pages generated by VS Code.
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.
dbcve · scoped1.128.1
Apply Visual Studio Code updates or patches as released by Microsoft to address the XSS vulnerability and ensure proper input sanitization for web page generation contexts.
Visual Studio Code 1.128.1 or later
- Open Visual Studio Code
- Check current version by clicking Help > About (or pressing Ctrl+Shift+P and typing 'About')
- If version is below 1.128.1, update by clicking Help > Check for Updates
- Alternatively, download version 1.128.1 or later from code.visualstudio.com
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-57101 — 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-2026-57101 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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