CVE-2026-49252

CRITICAL EPSS 18.6%
Published Jun 18, 20261w ago · Modified Jun 23, 20261w ago
9.9 CVSS 3.1
Critical
Find Similar
Published Jun 18, 2026 1w ago
Last Modified Jun 23, 2026 1w ago

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.

CVSS Details

Base Score
9.9
Exploitability
3.1
Impact
6.0
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality High
Integrity High
Availability Low

Threat Intelligence

EPSS Exploit Probability
18.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-1321

References 2

  • github.com https://github.com/deepstreamIO/deepstream.io/commit/54b8e2958a98df444b5b5d9a66e22872afd84e44
  • github.com https://github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-9v98-6g37-x9g6

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.