CVE-2026-49252: deepstream is vulnerable to prototype pollution

June 26, 2026

Prototype pollution in deepstream server v <=10.0.4. Potential privilege escalation from any authenticated user with write permission to any record.

References

github.com/advisories/GHSA-9v98-6g37-x9g6
github.com/deepstreamIO/deepstream.io/commit/54b8e2958a98df444b5b5d9a66e22872afd84e44
github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-9v98-6g37-x9g6
nvd.nist.gov/vuln/detail/CVE-2026-49252

Code Behaviors & Features

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