Unrated severityNVD Advisory· Published Jun 18, 2026
deepstream is vulnerable to prototype pollution
CVE-2026-49252
Description
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.
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Affected products
1- Range: <10.0.5
Patches
Vulnerability mechanics
References
2- github.com/deepstreamIO/deepstream.io/commit/54b8e2958a98df444b5b5d9a66e22872afd84e44mitrex_refsource_MISC
- github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-9v98-6g37-x9g6mitrex_refsource_CONFIRM
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