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🔒 Fix sensitive OAuth token partial exposure in logs#16

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TrueAlpha-spiral merged 1 commit intomainfrom
security-fix-oauth-token-logging-10411736675007371156
Feb 20, 2026
Merged

🔒 Fix sensitive OAuth token partial exposure in logs#16
TrueAlpha-spiral merged 1 commit intomainfrom
security-fix-oauth-token-logging-10411736675007371156

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🎯 What: Fixed a security vulnerability where a partial OAuth access token was being logged to the console.

⚠️ Risk: Logging partial tokens increases the risk of information leakage and potential token compromise.

🛡️ Solution: Removed the logging of the token substring and replaced it with a generic success message. Added a new security-focused test file to ensure the token is never logged.


PR created automatically by Jules for task 10411736675007371156 started by @TrueAlpha-spiral

This change removes the logging of the first 20 characters of the OAuth access token during verification.
Logging sensitive tokens, even partially, is a security risk.

- Removed token substring logging in `packages/core/src/mcp/oauth-provider.ts`
- Added `packages/core/src/mcp/oauth-provider-security.test.ts` to verify the fix and prevent regression.

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
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@TrueAlpha-spiral TrueAlpha-spiral marked this pull request as ready for review February 20, 2026 01:06
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🪢

@TrueAlpha-spiral TrueAlpha-spiral merged commit 04df645 into main Feb 20, 2026
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