We all know that textbook ElGamal falls due to chosen ciphertext attacks, because of its multiplicative homomorphic property ($E(A)*E(B)=E(AB)$).
However these attacks require the ciphertext ($E(A)$ or $E(B)$) to be given, meaning as per this answer this would mean ElGamal isn't IND-CCA2, but IND-CCA1 as the access to a decryption oracle before the ciphertext is known doesn't help anything.
Hence my question:
Is the ElGamal encryption scheme IND-CCA1 or "only" IND-CPA?
If the ElGamal encryption scheme isn't IND-CCA1 how would the CCA1 attack look like?