CVE-2026-100674

stoatchat before 0.15.5 fails to revalidate usernames after Unicode sanitization, allowing attackers to create usernames with forbidden characters by submitting Unicode letters that transform into rejected characters. Attackers can bypass character allowlists and length limits to create...

CVE-2026-100674 stoatchat before 0.15.5 Username Validation Bypass via Unicode Sanitization

stoatchat before 0.15.5 fails to revalidate usernames after Unicode sanitization, allowing attackers to create usernames with forbidden characters by submitting Unicode letters that transform into rejected characters. Attackers can bypass character allowlists and length limits to create...

CVE-2026-100674

The stoatchat application (versions prior to 0.15.5 ) is vulnerable to a username validation bypass due to insufficient revalidation after Unicode sanitization . An attacker can submit Unicode letters that transform into forbidden characters post-sanitization, allowing them to bypass character al...

PT-2026-99345

Name of the Vulnerable Software and Affected Versions stoatchat versions prior to 0.15.5 Description Insufficient revalidation of usernames after Unicode sanitization allows the creation of usernames containing forbidden characters. By submitting specific Unicode letters that transform into...