Cross-site Scripting (XSS)

Overview justhtml is an A pure Python HTML5 parser that just works. Affected versions of this package are vulnerable to Cross-site Scripting XSS in the tomarkdown function. An attacker can inject arbitrary HTML content by supplying specially crafted input that includes HTML-significant characters...

GHSA-3RCM-VJRC-P45J JustHTML has a Sanitizer Bypass (in Markdown)

Summary tomarkdown does not sufficiently escape text content that looks like HTML. As a result, untrusted input that is safe in tohtml can become raw HTML in Markdown output. This is not specific to tokenizer raw-text states like , , or , although those states can trigger the behavior. The root...

JustHTML has a Sanitizer Bypass (in Markdown)

Summary tomarkdown does not sufficiently escape text content that looks like HTML. As a result, untrusted input that is safe in tohtml can become raw HTML in Markdown output. This is not specific to tokenizer raw-text states like , , or , although those states can trigger the behavior. The root...