Open source package with 1 million monthly downloads stole user credentials

A widely used open source package with 1 million monthly downloads was compromised by threat actors exploiting a vulnerability in the developers’ account workflow, granting access to sensitive information. The malicious package, element-data 0.23.3, was distributed to users, collecting user credentials, API tokens, and more. Users who installed this version are advised to consider their credentials compromised. The attackers gained access through a GitHub action, allowing them to publish the malicious package. The developers swiftly removed the package, rotated credentials, and fixed the vulnerability.