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Rocket.Chat quietly patches XSS vulnerability

2020-12-18 16:57
Rocket.Chat has quietly fixed a stored XSS vulnerability in the following
commits:

https://github.com/RocketChat/Rocket.Chat/commit/96d3155245ec65f681664b48b6dafc94c1ea021c
https://github.com/RocketChat/Rocket.Chat/commit/43fe12d775b2329e780a1369a1b2c25070cdcab9

Exploitation of this vulnerability is very straightforward by manipulating
a message attachment to contain a XSS payload either in the type or the
body.

No release of Rocket.Chat contains these fixes. Users should consider
cherrypicking 96d3155245ec65f681664b48b6dafc94c1ea021c
and 43fe12d775b2329e780a1369a1b2c25070cdcab9 to patch their Rocket.Chat
installation.

Moe

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Source: 14/ceD/0202/erusolcsidlluf/gro.stsilces

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