CVE-2025-59828
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 · uneditedClaude Code is an agentic coding tool. Prior to Claude Code version 1.0.39, when using Claude Code with Yarn versions 2.0+, Yarn plugins are auto-executed when running yarn --version. This could lead to a bypass of the directory trust dialog in Claude Code, as plugins would be executed prior to the user accepting the risks of working in an untrusted directory. Users running Yarn Classic were unaffected by this issue. This issue has been fixed in version 1.0.39. Users on standard Claude Code auto-update will have received this fix automatically. Users performing manual updates are advised to update to the latest version.
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 · high confidenceIn Claude Code versions before 1.0.39, Yarn 2.0+ plugins auto-execute when running yarn --version, which bypasses the directory trust dialog that normally requires user acknowledgment before running code in an untrusted directory. This allows potentially malicious code execution in untrusted directories without user consent.
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< 1.0.39CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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 Claude Code versionRun `claude --version` in your terminal to see the installed version of Claude CodeAffected if Version is lower than 1.0.39 (for example, 1.0.38, 1.0.37, etc.)
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Verify Yarn 2.0+ plugin presenceLook for a yarn.config.js, yarn.config.ts, or .yarnrc.yml file in your project directory, or check if you have any @yarnpkg/ scoped packages installed locallyAffected if You have Yarn 2.0+ (Berry) configured or use Yarn 2.0+ plugins in your project and Claude Code version is below 1.0.39
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Check auto-update statusLook at your Claude Code settings or startup messages to see if auto-update is enabled and which version is currently runningAffected if Auto-update is disabled or failed and the running version is below 1.0.39
You are affected if Claude Code version is below 1.0.39 and you work with Yarn 2.0+ projects, as the directory trust dialog can be bypassed when running yarn --version.
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 · scoped1.0.39
Update Claude Code to version 1.0.39 or later to receive the fix; users with auto-update enabled should have already received this patch.
1.0.39
- Ensure Claude Code is updated to version 1.0.39 or later
- For auto-update users: Verify the update has been applied by checking the Claude Code version
- For manual update users: Download and install the latest Claude Code version from the official source
- After updating, verify the fix by running yarn --version in a directory to confirm plugins no longer execute before the trust dialog appears
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,696.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-59828 — 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-2025-59828 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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