Polygon ships Bor v2.10.3 to patch parallel execution flaws, says no exploitation found

• —Bor v2.10.3 patches two medium-severity DoS flaws in BlockSTM V2
• —First flaw: shared Keccak-256 cache had no capacity limit
• —Second flaw: contract code hashes were recomputed during parallel execution
• —Affected versions are v2.10.1 and v2.10.2; no exploitation seen on mainnet or Amoy