Securing XML implementations across the web
In December 2020, we blogged about security issues in Go’s encoding/xml with critical impact on several Go-based SAML implementations. Coordinating the disclosure around those issues was no small feat; we spent months emailing the Go security team, reviewing code, testing and retesting exploits, coming up with workarounds, implementing a validation library, and finally reaching out to SAML library maintainers and 20 different companies downstream.