PII Exposure via Email Confirmation Link – Email Embedded in Token & Leaked via Wayback Machine

Bug reported by Mantosh Sah was disclosed at August 23, 2025, 5:29 am   |   Information Disclosure

An email confirmation link used by Omise (dashboard.omise.co) included the user's email address directly embedded in a token that was visible in the URL. This token was archived publicly by the Wayback Machine (archive.org), resulting in public exposure of personally identifiable information (PII).