[Snyk] Upgrade mysql2 from 3.14.1 to 3.15.3

[Sunwuyuan]

Snyk has created this PR to upgrade mysql2 from 3.14.1 to 3.15.3.

ℹ️ Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

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• The recommended version is 19 versions ahead of your current version.

• The recommended version was released 21 days ago.

Issues fixed by the recommended upgrade:

	Issue	Score	Exploit Maturity
	Allocation of Resources Without Limits or Throttling SNYK-JS-AXIOS-12613773	666	Proof of Concept
	Regular Expression Denial of Service (ReDoS) SNYK-JS-BRACEEXPANSION-9789073	666	Proof of Concept
	Regular Expression Denial of Service (ReDoS) SNYK-JS-BRACEEXPANSION-9789073	666	Proof of Concept
	Predictable Value Range from Previous Values SNYK-JS-FORMDATA-10841150	666	Proof of Concept
	Uncaught Exception SNYK-JS-MULTER-10773732	666	No Known Exploit
	Improper Handling of Unexpected Data Type SNYK-JS-ONHEADERS-10773729	666	No Known Exploit
	Improper Validation of Specified Type of Input SNYK-JS-VALIDATOR-13395830	666	Proof of Concept

Release notes

Package name: mysql2

• 3.15.3 - 2025-10-21
  

  3.15.3 (2025-10-21)

  Bug Fixes

  • skip SNI for IP addresses in TLS connection (#3835) (6000eb2)
• 3.15.3-canary.6000eb2f - 2025-10-14
• 3.15.2 - 2025-10-08
  

  3.15.2 (2025-10-08)

  Bug Fixes

  • fix sha256_password to work correctly over a TLS connection (#3809) (fb9eae1)
• 3.15.2-canary.fb9eae11 - 2025-10-03
• 3.15.1 - 2025-09-24
  

  3.15.1 (2025-09-24)

  Bug Fixes

  • typings: fix missing callback to PoolCluster.end() (#3819) (53a9bc2)
• 3.15.1-canary.53a9bc24 - 2025-09-24
• 3.15.1-canary.288d757b - 2025-09-18
• 3.15.0 - 2025-09-16
  

  3.15.0 (2025-09-16)

  Features

  • gracefully end pool connections #3148 (#3776) (e72247f)
• 3.14.6-canary.e72247f7 - 2025-09-09
• 3.14.5 - 2025-09-08
  

  3.14.5 (2025-09-08)

  Bug Fixes

  • types: restrict StreamOptions.objectMode to true (#3686) (#3784) (c091f1b)
• 3.14.5-canary.c091f1ba - 2025-09-08
• 3.14.4 - 2025-09-01
  

  3.14.4 (2025-09-01)

  Bug Fixes

  • stream: destroy connection when stream errors (#3769) (cc34a83)
  • stream: resume connection when stream errors or is destroyed (#3775) (9642a1e)
  • stream: fix backpressure when using TLS (#1752) (64ea4cd)
• 3.14.4-canary.cc34a833 - 2025-08-27
• 3.14.4-canary.9642a1e5 - 2025-08-27
• 3.14.4-canary.64ea4cdd - 2025-09-01
• 3.14.3 - 2025-07-29
  

  3.14.3 (2025-07-29)

  Bug Fixes

  • resolve parser cache collision with dual typeCast connections (#3644) (ce2ad75)
• 3.14.3-canary.ce2ad75a - 2025-07-26
• 3.14.2 - 2025-07-10
  

  3.14.2 (2025-07-10)

  Bug Fixes

  • pass columnType to readDateTimeString (#3700) (1ee48cc)
• 3.14.2-canary.1ee48cce - 2025-07-10
• 3.14.1 - 2025-04-27
  

  3.14.1 (2025-04-27)

  Bug Fixes

  • Fix for SET NAMES utf8 causing an unknown encoding error (#3551) 0617813

from mysql2 GitHub release notes

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Important

• Check the changes in this PR to ensure they won't cause issues with your project.
• This PR was automatically created by Snyk using the credentials of a real user.
• Max score is 1000. Note that the real score may have changed since the PR was raised.

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Project	Deployment	Preview	Comments	Updated (UTC)
our-world	Error			Nov 12, 2025 3:55am

[claude]

Pull Request Review: mysql2 Upgrade (3.14.1 → 3.15.3)

Summary

This is a Snyk-generated security update that upgrades mysql2 from version 3.14.1 to 3.15.3, addressing multiple vulnerabilities in transitive dependencies.

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✅ Positive Aspects

1. Security Improvements: This upgrade addresses 7 security vulnerabilities, including:

   • Critical: Predictable Value Range issue in form-data (SNYK-JS-FORMDATA-10841150)
   • High: Uncaught Exception in multer (SNYK-JS-MULTER-10773732)
   • Medium: Resource allocation issues in axios and validator
   • Low: ReDoS vulnerabilities in brace-expansion

2. Bug Fixes: The upgrade includes important fixes:

   • TLS connection improvements (SNI handling for IP addresses)
   • sha256_password authentication fix over TLS
   • Stream error handling and backpressure improvements
   • Pool connection graceful shutdown

3. Backward Compatibility: This is a minor version upgrade (3.14 → 3.15), which should maintain API compatibility.

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🔍 Code Quality & Best Practices

Good:

• Single dependency change keeps the PR focused
• Uses caret (^) versioning which follows semver best practices
• The upgrade is automated by Snyk, reducing human error

Consideration:

• The project uses Prisma as the ORM, so direct mysql2 usage may be limited to Prisma's internal operations
• No code changes required, indicating good abstraction via Prisma

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⚠️ Potential Issues & Recommendations

1. Testing Coverage

   • ⚠️ Issue: The project has minimal test coverage (package.json:7 shows test script placeholder)
   • 📝 Recommendation: Before merging, manually test:
     • Database connections (especially TLS/SSL connections if used)
     • User authentication flows
     • Any queries using prepared statements
     • Connection pool behavior under load

2. Version Jump

   • The upgrade skips 19 intermediate versions (3.14.1 → 3.15.3)
   • While following semver, review the mysql2 release notes for breaking changes
   • Key changes to be aware of:
     • Stream handling improvements (v3.14.4)
     • Parser cache fixes (v3.14.3)
     • Pool graceful shutdown (v3.15.0)

3. Environment-Specific Testing

   • Test in staging environment first if available
   • Pay special attention if using:
     • TLS/SSL database connections
     • sha256_password authentication
     • Connection pooling
     • Database streams

4. Prisma Compatibility

   • Verify Prisma (v6.13.0) is compatible with mysql2 v3.15.3
   • Check Prisma's supported database versions

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🔒 Security Assessment

Strengths:

• Addresses 7 known vulnerabilities in dependencies
• Most critical issues are in dependencies (axios, form-data, multer) not direct mysql2 code
• Upgrade closes vulnerabilities with Proof of Concept exploits

Notes:

• The vulnerabilities are in transitive dependencies, not mysql2 itself
• After merge, verify all vulnerabilities are resolved: npm audit or snyk test

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🚀 Performance Considerations

Improvements:

• Stream backpressure handling fix (v3.14.4) may improve memory usage under high load
• Connection pool graceful shutdown (v3.15.0) provides better resource cleanup

Neutral:

• No significant performance regressions expected
• Minor version changes typically maintain performance characteristics

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✅ Test Coverage

Current State: ⚠️ Inadequate

• Only 2 test files found (test/unified-auth-test.js, test/sudo-auth-test.js)
• Test script is not configured (package.json:7)

Recommendations:

1. Run existing tests if they're executable
2. Manual testing checklist:
   • Application starts successfully
   • User authentication works
   • Database queries execute correctly
   • Connection pooling functions properly
   • No console errors on startup
3. Consider adding automated tests for critical paths before future dependency updates

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📋 Recommended Actions Before Merge

1. ✅ Review changelog: Check mysql2 releases for any behavioral changes
2. ✅ Local testing: Test the upgrade locally with your development database
3. ✅ Staging deployment: Deploy to staging environment if available
4. ✅ Smoke tests: Verify core functionality (auth, queries, connections)
5. ✅ Monitoring: Watch error logs and performance metrics after production deployment
6. ✅ Rollback plan: Ensure you can quickly revert if issues arise

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🎯 Final Recommendation

Status: ✅ Approve with Testing

This is a beneficial security upgrade that should be merged, but not without proper testing due to:

• Multiple security fixes justify the upgrade
• Minor version change reduces breaking change risk
• Limited test coverage requires manual verification
• Production database changes warrant caution

Merge Timeline: Test thoroughly, then merge within 1-2 weeks to address security vulnerabilities.

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Review conducted by Claude Code - focused on security, compatibility, and production readiness

[claude]

Pull Request Review: Upgrade mysql2 from 3.14.1 to 3.15.3

Overview

This PR upgrades the mysql2 package from version 3.14.1 to 3.15.3 (19 versions ahead). This is a minor version upgrade that should be safe to merge.

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✅ Code Quality & Best Practices

Positive:

• Clean dependency upgrade with minimal changes
• Follows semantic versioning - minor version bump indicates backward compatibility
• Automated PR from Snyk shows good security practices

Observations:

• Current lock file shows version 3.14.1, which will be updated to 3.15.3
• No breaking changes expected based on version increment

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🐛 Potential Bugs or Issues

Low Risk Issues:

1. Large version jump: Upgrading 19 versions at once increases risk. The changelog shows several bug fixes that could affect behavior:
   • v3.15.3: SNI handling for IP addresses in TLS connections
   • v3.15.2: sha256_password authentication over TLS
   • v3.15.0: Graceful pool connection ending
   • v3.14.4: Stream error handling and backpressure fixes
   • v3.14.3: Parser cache collision resolution

Recommendation: Test database connections thoroughly, especially:

• TLS/SSL connections
• Connection pooling behavior
• Authentication mechanisms
• Stream-based queries

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⚡ Performance Considerations

Improvements in 3.15.x:

• v3.15.0 adds graceful pool connection ending, which should improve connection lifecycle management
• v3.14.4 fixes backpressure issues with TLS, potentially improving streaming performance

Impact: Neutral to positive - no performance regressions expected

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🔒 Security Concerns

Critical Vulnerabilities Fixed:
According to Snyk, this upgrade addresses 7 vulnerabilities in transitive dependencies:

• 🔴 CRITICAL: Predictable Value Range (form-data) - SNYK-JS-FORMDATA-10841150
• 🟠 HIGH: Uncaught Exception (multer) - SNYK-JS-MULTER-10773732
• 🟡 MEDIUM: Resource Allocation (axios) - SNYK-JS-AXIOS-12613773
• 🟡 MEDIUM: Input Type Handling (on-headers) - SNYK-JS-ONHEADERS-10773729
• 🟡 MEDIUM: Input Validation (validator) - SNYK-JS-VALIDATOR-13395830
• 🟢 LOW: ReDoS (brace-expansion) - SNYK-JS-BRACEEXPANSION-9789073 (2 instances)

Security-Related Bug Fixes:

• v3.15.2: Fixed sha256_password authentication over TLS connections (authentication security)
• v3.15.3: Proper SNI handling for IP addresses (TLS security)

⚠️ IMPORTANT: While mysql2 itself may not have had CVEs, the transitive dependency vulnerabilities are real security issues that should be addressed.

Recommendation: ✅ APPROVE - This upgrade addresses multiple security vulnerabilities and should be merged promptly.

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🧪 Test Coverage

Major Concern - No Automated Tests:

• package.json:7 shows: "test": "echo \"Error: no test specified\" && exit 1"
• Only manual test scripts found: test-stream-upload.js, test-assets-upload.js, sudo-auth-test.js, unified-auth-test.js
• No automated test suite to verify upgrade safety

Critical Recommendation:

1. Before merging: Manually test database operations:

   • Connection establishment (with/without TLS)
   • Query execution (SELECT, INSERT, UPDATE, DELETE)
   • Connection pooling
   • Transaction handling
   • Authentication (especially if using sha256_password)
   • Stream queries if used

2. Long-term: Implement automated tests for database layer to prevent regressions in future upgrades

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📋 Action Items

Before Merge:

• Run manual database connectivity tests in staging environment
• Verify TLS/SSL connections work correctly
• Test connection pool behavior under load
• Check authentication mechanisms (especially sha256_password)
• Verify no runtime errors in development environment

After Merge:

• Monitor production logs for database-related errors
• Watch for connection pool issues
• Consider implementing automated integration tests for database layer

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🎯 Final Recommendation

✅ APPROVE with conditions

This upgrade should be merged to address security vulnerabilities, but with proper testing:

1. Priority: HIGH - Addresses critical security vulnerabilities
2. Risk: LOW-MEDIUM - Minor version upgrade with bug fixes
3. Testing Required: Manual testing of database operations before production deployment

The security fixes alone justify this upgrade. The bug fixes in connection handling and TLS are beneficial improvements. However, the lack of automated tests means you will need to rely on manual verification and production monitoring.

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Review completed by Claude Code