Feed/CVE-2026-49252
CVE-2026-49252CRITICALCVSS 9.9

deepstream is vulnerable to prototype pollution

Published Jun 26, 2026·Updated Jun 26, 2026

NVD Description

### Impact Prototype pollution in deepstream server v <=10.0.4. Potential privilege escalation from any authenticated user with write permission to any record. ### Patches Yes, upgrade to v10.0.5 ### Workarounds Filter out all messages containing the path `__proto__`, `constructor`, `prototype`, **before they reach the server's message pipeline**

Affected Packages (1)

@deepstream/serverNPM
Fixed in 10.0.5

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

References

View on NVD Search GitHub Search Google

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