CVE-2026-49864

CVE-2026-49864 (Wetty) is a DOM XSS in the Wetty client (prior to v3.0.4) triggered by a crafted file-download escape sequence that decodes a base64 filename and injects it into a Toastify HTML string without escaping. The attacker-controlled filename can lead to raw HTML/JS rendering in the vict...

CVE-2026-49864 wetty vulnerable to DOM XSS via file-download filename

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,...