CVE-2020-8203 — Phalanx Remediation Evidence

Affected package: lodash Remediation: upgrade lodash to 4.17.21 Fixed in: 4.17.21

Cryptographic provenance

• Chainguard SBOM hash: sha256:a1b2c3d4e5f60718293a4b5c6d7e8f9012345abcdef12345
• Sigstore signature: MEUCIQDphal4ntest...
• SLSA provenance level: 3
• Guild audit trail id: guild-audit-phalanx-test-1777069370736
• x402 receipt hash (Base Sepolia): 0xphalanxtestreceipt

Parallel speculation

Ghost zero-copy forks explored: fork-a1b2c3, fork-d4e5f6, fork-789abc, fork-def012

InsForge per-hypothesis backends: https://insforge-a1b2.phalanx.dev, https://insforge-c3d4.phalanx.dev

Validation summary

All 4 forks reproduced the vulnerability on the pre-patch fixture. Fork a1b2c3 + d4e5f6 passed all integration tests after the 4.17.21 upgrade; 789abc was cancelled as a false positive mid-flight via Redis Pub/Sub; def012 produced a regression in lodash-es downstream usage.

Pull request

The remediation patch was filed by the TinyFish web agent: https://github.com/ElijahUmana/phalanx/pull/0

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Published by Phalanx — parallel-fork CVE response fabric.