npm: Happy DOM: SSRF via iframe and link stylesheet when parsing untrusted HTML

npm: Happy DOM: SSRF via iframe and link stylesheet when parsing untrusted HTML vulnerability discovered by ? in WordPress npm happy-dom versions = 20.14.6...

Open-Xchange: OX Guard: DOM Based Cross-Site Scripting

Summary OX Guard's "Guest Reader" is vulnerable to DOM Based XSS. The vulnerable parameter is "templid". The reader.js script see below takes the parameter's value and injects it into the page/DOM without encoding/sanitizing it first. PoC:...