CVE-2026-49252: 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…

PriorityP263critical9.9CVSS 3.1

AVNACLPRLUINSCCHIHAL

EPSS

0.27%

18.6th percentile

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
deepstream	server	>= 0 < 10.0.5	10.0.5
deepstreamio	deepstream.io	< 10.0.5	10.0.5

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