critical9.9
CVE-2026-49252
deepstream is a server that allows clients and backend services to sync data, send messages and make rpcs at scale.
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @deepstream/server | < 10.0.5 | 10.0.5 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-9v98-6g37-x9g6
- https://github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-9v98-6g37-x9g6
- https://nvd.nist.gov/vuln/detail/CVE-2026-49252
- https://github.com/deepstreamIO/deepstream.io/commit/54b8e2958a98df444b5b5d9a66e22872afd84e44