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crnkovic.dev

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WSO2 #3: Server-side request forgery

CVE-2025-5350 and CVE-2025-5605 combined make a pre-auth server-side request forgery (SSRF) vulnerability in WSO2 API Manager, WSO2 Identity Server, and other WSO2 products.

WSO2 #2: The many ways to bypass authentication in WSO2 products

CVE-2025-9152, CVE-2025-10611, and CVE-2025-9804 are critical authentication bypass and privilege escalation vulnerabilities I discovered in WSO2 API Manager and WSO2 Identity Server.

WSO2 #1: 404 to arbitrary file read

CVE-2025-2905 is a blind XXE vulnerability in WSO2 API Manager and other WSO2 products dependent on WSO2-Synapse.

Testing a new encrypted messaging app's extraordinary claims

How I accidentally breached a nonexistent database and found every private key in the Converso app.

Signal Groups V2 is a privacy downgrade

Signal changed the way end-to-end encrypted group conversations work, moving a client-side abstraction to the Signal servers.