CVE
CVE-2026-49252
deepstream is vulnerable to prototype pollution
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
Package Versions Affected
Package Version
patch Availability
No items found.
Automatically patch vulnerabilities without upgrading
Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request
CVSS Version
Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.9
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
C
H
U
9.9
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Related Resources
No items found.
References
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, https://github.com/deepstreamIO/deepstream.io