fix(go): added maxBinarySize limit to decimal deserialization#3623
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Why?
the deserialization of arbitrary-precision DECIMAL numbers involves reading a magnitude payload byte array. The length of this payload is derived from the header's metadata and is completely attacker-controlled.
What does this PR do?
use
ctx.ReadBinaryLength()which correctly enforcesmaxBinarySizeguardrails.Related issues
AI Contribution Checklist
yes/noyes, I included a completed AI Contribution Checklist in this PR description and the requiredAI Usage Disclosure.yes, my PR description includes the requiredai_reviewsummary and screenshot evidence of the final clean AI review results from both fresh reviewers on the current PR diff or current HEAD after the latest code changes.Does this PR introduce any user-facing change?
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