CVE-2026-82287: Rybbit-Io Rybbit

High severity, CVSS 8.1. EPSS: 0.5% chance of exploitation in the next 30 days.

Rybbit before 2.7.0 contains a CORS misconfiguration vulnerability that allows attackers to bypass origin restrictions by reflecting any request origin in Access-Control-Allow-Origin responses while credentials are enabled. Attackers can issue credentialed cross-origin requests from any website to read analytics data, account information, and perform authenticated state-changing operations as the victim user.

Affected products

• Rybbit-Io Rybbit: before 2.7.0 (fixed in 2.7.0)

Published 2026-08-28. Last modified 2026-09-23.