CVE-2026-33534 EspoCRM has authenticated SSRF via internal-host validation bypass using alternative IPv4 notation

EspoCRM is an open source customer relationship management application. Versions 9.3.3 and below have an authenticated Server-Side Request Forgery SSRF vulnerability that allows bypassing the internal-host validation logic by using alternative IPv4 representations such as octal notation e.g.,...

Craft CMS Vulnerable to SSRF in GraphQL Asset Mutation via Alternative IP Notation

I observed a recent commit intended to mitigate Server-Side Request Forgery SSRF vulnerabilities. While the implemented defense mechanisms are an improvement, I have identified two methods to bypass these protections. This report details the first bypass method involving alternative IP notation,...