The Times’s United States edition does not typically publish political cartoons and did not run this one, but the international edition frequently includes them. An editor from The Times’s Opinion section downloaded Mr. Antunes’s cartoon from the syndicate and made the decision to publish it, according to Ms. Murphy.

Ms. Murphy declined to identify the editor, who she said was “working without adequate oversight” because of a “faulty process” that is now being reviewed.

“We are evaluating our internal processes and training,” Ms. Murphy said. “We anticipate significant changes.”

James Bennet, the editor who oversees all content on The Times’s editorial pages, declined to comment in detail. “I’m going to let our statement speak for us at this point,” Mr. Bennet said.

Bret Stephens, an opinion columnist for The Times, wrote about the issue on Sunday and called on the newspaper to do “some serious reflection as to how it came to publish that cartoon,” which he called “an astonishing act of ignorance of anti-Semitism.”

And Vice President Mike Pence tweeted on Sunday, “We stand with Israel and we condemn antisemitism in ALL its forms.”

Sergio Florez, the managing editor for The Times’s Licensing Group, said the group took in 30 or more cartoons a week from CartoonArts through an automated feed to its website, where publishers can look through the cartoons and buy a license to reprint them. The group’s editors sporadically review the feed and remove work that is biased or racist, he said.