Research · Tag · Prysm
Posts tagged prysm.
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ETHEREUM
2026-08-28
Prysm's attestation pool endpoint does the BLS work before it checks the list length
Prysm's POST /eth/v2/beacon/pool/attestations decodes an unbounded JSON list and runs a BLS G2 subgroup-check per element before any cap applies, turning a 59 MB request into 5.81 seconds of single-goroutine CPU on an exposed Beacon API.
Simon Morley
Read →8 min read