CVE-2026-57531 Milkdown < 7.21.3 DOM XSS via innerHTML Assignment

Milkdown before 7.21.3 contains a DOM cross-site scripting vulnerability in the @milkdown/plugin-emoji package that allows unauthenticated attackers to execute arbitrary JavaScript in the host application's origin by causing a victim to paste attacker-controlled content. The parseDOM.getAttrs...

PT-2026-64410

Name of the Vulnerable Software and Affected Versions Milkdown versions prior to 7.21.3 Description A DOM cross-site scripting issue exists in the @milkdown/plugin-emoji package. Unauthenticated attackers can execute arbitrary JavaScript in the host application origin by tricking a victim into...

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...

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...