A critical vulnerability was disclosed in Marimo, an open-source reactive Python notebook platform. Less than 10 hours later, attackers successfully weaponized the flaw to steal sensitive cloud credentials, highlighting the extreme speed of modern threat actors. The security flaw is formally tracked as CVE-2026-39987 (formerly GHSA-2679-6mx9-h9xc) and carries a Critical CVSS v4.0 score of 9.3. […] The post Marimo RCE Vulnerability Exploited in the Within 10 Hours of Disclosure appeared first on Cyber Security News.