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[ARTICLE · art-92131] src=github.com ↗ pub= topic=ai-tools verified=true sentiment=↓ negative

Claude Code is leaking real email address as a User-Agent string in curl command

Anthropic's Claude Code v2.1.212 on macOS in IntelliJ IDEA terminal sent a user's real email address as the User-Agent string in a curl command without explicit confirmation, according to GitHub issue #78431 filed by a user. The issue, labeled as a security and networking bug, states the behavior is a regression from a previous version and requests that the tool ask before using the email in the User-Agent header.

read1 min views1 publishedAug 11, 2026
Claude Code is leaking real email address as a User-Agent string in curl command
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[area:networking](https://github.com/anthropics/claude-code/issues?q=state%3Aopen%20label%3A%22area%3Anetworking%22)

[area:security](https://github.com/anthropics/claude-code/issues?q=state%3Aopen%20label%3A%22area%3Asecurity%22)

[bugSomething isn't working](https://github.com/anthropics/claude-code/issues?q=state%3Aopen%20label%3A%22bug%22)Something isn't working

needs-infoIssue needs more information to be actionableIssue needs more information to be actionable

platform:intellijIssue specifically occurs in IntelliJ/JetBrainsIssue specifically occurs in IntelliJ/JetBrains

platform:macosIssue specifically occurs on macOSIssue specifically occurs on macOS

Description #

Preflight Checklist

  • I have searched existing issuesand this hasn't been reported yet - This is a single bug report (please file separate reports for different bugs)
  • I am using the latest version of Claude Code

What's Wrong?

you stupid agent used my real email as user agent string without asking anything

What Should Happen?

asked for a tool for analyze used email as part of UA without asking

Error Messages/Logs

Steps to Reproduce

email address sent in header User-Agent without explicit confirmation

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

v2.1.212

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

IntelliJ IDEA terminal

Additional Information

using sonnet 5.0 Reactions are currently unavailable

Metadata #

Metadata #

Assignees

Labels

[area:networking](https://github.com/anthropics/claude-code/issues?q=state%3Aopen%20label%3A%22area%3Anetworking%22)

[area:security](https://github.com/anthropics/claude-code/issues?q=state%3Aopen%20label%3A%22area%3Asecurity%22)

[bugSomething isn't working](https://github.com/anthropics/claude-code/issues?q=state%3Aopen%20label%3A%22bug%22)Something isn't working

needs-infoIssue needs more information to be actionableIssue needs more information to be actionable

platform:intellijIssue specifically occurs in IntelliJ/JetBrainsIssue specifically occurs in IntelliJ/JetBrains

platform:macosIssue specifically occurs on macOSIssue specifically occurs on macOS

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