CVE-2026-35539

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. XSS exists because of insufficient HTML attachment sanitization in preview mode. A victim must preview a text/html attachment...

Design/Logic Flaw

Invision Power Board aka IPB or IP.Board 2.x through 3.0.4, when Internet Explorer 5 is used, allows XSS via a .txt attachment...

Mozilla text file mishandling

Mozilla Firefox before 2.0.0.12 and SeaMonkey before 1.1.8 allows user-assisted remote attackers to cause a denial of service via a plain .txt file with a "Content-Disposition: attachment" and an invalid "Content-Type: plain/text," which prevents Firefox from rendering future plain text files...

IBM Rational ClearQuest Web crossite scripting

Crossite scripting on text attachments...