CVE-2026-49864 | BDVDB-2026-358807 Detail

Description#

wetty provides terminal access in browser over http/https. Prior to version 3.0.4, the wetty client decodes a base64 filename from the file-download escape sequence and interpolates it raw into a Toastify HTML string (`escapeMarkup: false`). Any output the victim renders - a `cat`'d file, a tailed log, an SSH MOTD, a `curl` response - that contains `\x1b[5i...:...\x1b[4i` runs script in the wetty origin and types attacker-chosen keystrokes into the victim's SSH session. Version 3.0.4 fixes the issue.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12026-08-13Record published in the CVE List.
2. Version 22026-08-18Most recent update recorded in the CVE List.