The phrase "accidentally revealed" is correct and usable in written English.
It can be used when describing a situation where information was disclosed unintentionally.
Example: "During the meeting, she accidentally revealed the details of the upcoming project before it was officially announced."
Alternatives: "unintentionally disclosed" or "inadvertently exposed".
A small contractor's unguarded server accidentally revealed a trove of corporate documents from Tesla, Toyota, Volkswagen and other manufacturers.
The news organization accidentally revealed the location of fugitive software tycoon John McAfee in 2012, forcing him out of hiding.
The Portland Trail Blazers introduced Maurice Cheeks as their head coach, confirming what was accidentally revealed earlier tonight.
Users were annoyed, especially those who had the intimate details of their email address books accidentally revealed.
The Daily Beast reported earlier this month that Guccifer 2.0 had accidentally revealed his connection to the GRU by failing to mask his internet activity one one occasion.
Oscar Wilde couldn't resist being clever on the witness stand and, in making a joke, accidentally revealed that he liked to kiss attractive young men.
Last November, federal prosecutors accidentally revealed, in an unrelated court document, that a sealed indictment had been filed against WikiLeaks founder Julian Assange.
In February 2004, Amazon.ca accidentally revealed the true identities of its anonymous reviewers, showing that several authors had taken advantage of aliases to give themselves five-star ratings or run down their rivals.
The case against Hollingsworth and Woodward was withdrawn after police accidentally revealed the names of two protected witnesses to the solicitor for the defence, and the two witnesses in question, an Outcast and his wife, refused to give evidence.
Conversely, over in Sweden last week government minister Lars Ohly accidentally revealed more than he intended when he put a photo of his new leg tattoo on Instagram (leg tattoo! On a politician! Love Sweden).
But when Republicans pointed out that the anti-Semitism language was the first successful legislative maneuver by the opposition party in a decade, they accidentally revealed something about the risks of party discipline.
