CVE-2026-49252
CriticalCVSS 9.9Exploitation Probability (EPSS)
Low risk18th percentile — higher than 18% of all known CVEs
Summary
Deepstream is a server that allows clients and backend services to sync data, send messages, and make RPCs at scale. Versions prior to 10.0.5 are vulnerable to Prototype Pollution, which can lead to privilege escalation by any authenticated user with write permission.
Risk Assessment
Exploitation of this vulnerability may allow unauthorized users to gain elevated privileges, posing a serious security threat to the system.
Recommendation
It is recommended to upgrade to version 10.0.5 or later to mitigate this vulnerability.
Original NVD description (English source)
deepstream is a server that allows clients and backend services to sync data, send messages and make rpcs at scale. Versions prior to 10.0.5 are vulnerable to Prototype Pollution. Exploitation can lead to potential privilege escalation from any authenticated user with write permission to any record. This issue has been fixed in version 10.0.5.