ansi2html 1.7.0a0 through 1.9.3 Cross-Site Scripting via OSC 8

ansi2html versions 1.7.0a0 through 1.9.3 contain a cross-site scripting vulnerability in OSC 8 hyperlink handling that fails to validate or escape URL targets. Attackers controlling ANSI text input can inject javascript: schemes or terminate href attributes to execute arbitrary scripts in the context of pages displaying converted output.

ansi2html is vulnerable to regular expression denial of service (ReDoS) when certain types of user input is passed in.