[MC-93254] Color in text prompt using commands

This is a bug where you can insert colors into the user's text prompt with command blocks (namely using /tellraw).

Example:

/tellraw @a {"text":"Click","color":"blue","clickEvent":{"action":"suggest_command","value":"\u00a7bChat was replaced with colored text"}}

Note that, when the message is sent, you will be kicked for "illegal characters in chat" or similar on servers, and the singleplayer game will freeze (which is MC-79818)

Linked issues

relates to 1

MC-79813 JSON unicode decoding bug Resolved

Attachments

Comments 9

Steve Smith 2015-11-26T19:00:14Z

Confirmed for 15w47c

Steve Smith 2015-11-26T19:00:45Z

And wow that was craziest bug I've ever seen!

Patrick McCarthy 2018-09-15T00:15:21Z

Wow. When I clicked the chat action command, it filled my chat bar with specifically white text. Then I entered the text (tried to) and crashed the world saying that it had "Illegal characters in chat" This is quite incredible! How did you come across this bug anyway?

Patrick McCarthy 2018-09-15T00:16:48Z

Also can you explain why when I closed out of the error it brought me to the server menu? Might be the single player server "rerouting" I'm not sure. (Like being kicked out of a server)

Asteraoth 2018-09-15T00:19:07Z

@unknown, cause by MC-45602.

Patrick McCarthy 2018-09-15T00:22:05Z

I guess that explains that part (you know the not reported bug part haha). Thanks

j_p_smith 2020-06-25T12:50:20Z

Confirmed in 1.16.1.

ampolive 2021-08-16T21:46:51Z

Can confirm in 1.17.1.

Jarl-Penguin 2024-06-19T21:59:44Z

It seems like this was fixed in 1.19.1-rc1.