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Update mysql2 dependency version - #4085
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Updated mysql2 dependency version from 3.22.5 to 3.23.1.
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Navigate logical layers of code changes, visualize relationships, and explore their blast radius. 📝 WalkthroughWalkthroughThe package manifest updates the declared Changesmysql2 dependency update
Priority: ⬆️ High Estimated code review effort: 1 (Trivial) | ~3 minutes Change: Other Suggested reviewers: Merge Risk: 🟡 Moderate · up to Clean installs using npm ci will fail until the lockfile is updated, so the dependency change should not merge as-is. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In `@npm/package.json`:
- Line 61: Update the lockfile entry for the mysql2 dependency to match the
3.23.1 pin in package.json, including its resolved package metadata, so npm ci
accepts the manifest and lockfile.
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npm/package.json
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2 participants
Hi team,
In
npm/package.jsonthe project depends on:"mysql2": "3.22.5"
This version is affected by a High severity Data Amplification vulnerability:
The issue is in
handleCompressedPacket()(lib/compressed_protocol.js) which calls zlib.inflate without a maxOutputLength limit. A malicious or compromised MySQL server (or MitM on a non-TLS connection) can send a small compressed packet that expands to a very large size, causing memory exhaustion and process crash whencompress: trueis used.Recommendation: Upgrade mysql2 to 3.23.1 or later.
Thanks.
The vulnerability can cause denial of service through memory exhaustion or process termination. A successful attack does not require valid application-level database credentials if the attacker can act as, compromise, or intercept the MySQL server endpoint used by the client.
Remote exploitability is conditional. The application must use the compressed protocol, typically through a connection configuration containing:
compress: true
In addition, the attacker must control or compromise the database endpoint or obtain a man-in-the-middle position on a connection that is not adequately protected by TLS. The local PoC confirms the vulnerable library behavior but does not, by itself, prove that every deployment of Polis is remotely exploitable.
The demonstrated impact is limited to availability. This PoC does not demonstrate unauthorized data disclosure, data modification, authentication bypass, or remote code execution.
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