MGASA-2021-0010 Updated squirrelmail packages fix security vulnerabilities

XSS was discovered in SquirrelMail through 1.4.22. Due to improper handling of RCDATA and RAWTEXT type elements, the built-in sanitization mechanism can be bypassed. Malicious script content from HTML e-mail can be executed within the application context via crafted use of for example a NOEMBED,...