HexBrain

Nextcloud · Report #2326618

Deck app allows to spoof file extensions by using RTLO characters

Validstatus
mediumseverity
$100bounty
19upvotes
4 Jan 2026disclosed

Summary

Security advisory at https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xjvq-xvr7-xpg6

How it was found

The write-up for this report has not been downloaded yet, or the program disclosed it without one. Read it on HackerOne.

This report was disclosed publicly on HackerOne and belongs to its author and the program. See the original