Contradiction with Jeremiah 28:9
Whereas Hananiah prophesies peace in Jeremiah 28:11, Jeremiah 28:9 states that only the prophecy which comes to pass will be confirmed as from the Lord.
Jeremiah 28:9: The prophet which prophesieth of peace, when the word of the prophet shall come to pass, [then] shall the prophet be known, that the LORD hath truly sent him.
Contradiction with Ezekiel 13:10
Jeremiah 28:11 predicts peace, but Ezekiel 13:10 criticizes prophets who falsely predict peace when there is none.
Ezekiel 13:10: Because, even because they have seduced my people, saying, Peace; and [there was] no peace; and one built up a wall, and, lo, others daubed it with untempered [morter]: [a wall: or, a slight wall]
Contradiction with Jeremiah 14:13-14
Jeremiah prophesies peace through Hananiah, while Jeremiah 14:13-14 refutes false prophets who claim there will be peace when the Lord has not spoken that.
Jeremiah 14:13-14: Then said I, Ah, Lord GOD! behold, the prophets say unto them, Ye shall not see the sword, neither shall ye have famine; but I will give you assured peace in this place. [assured...: Heb. peace of truth]
Contradiction with 1 Thessalonians 5:3
Jeremiah 28:11 suggests safety and peace, but 1 Thessalonians 5:3 warns that sudden destruction will come when people say 'Peace and safety.'
1 Thessalonians 5:3: For when they shall say, Peace and safety; then sudden destruction cometh upon them, as travail upon a woman with child; and they shall not escape.
Contradiction with Jeremiah 23:16-17
In contrast to Hananiah's assurance of peace in Jeremiah 28:11, Jeremiah 23:16-17 warns against prophets who speak visions of their own minds promising peace.
Jeremiah 23:16-17: Thus saith the LORD of hosts, Hearken not unto the words of the prophets that prophesy unto you: they make you vain: they speak a vision of their own heart, [and] not out of the mouth of the LORD.