GHSA-9v98-6g37-x9g6

Source

https://github.com/advisories/GHSA-9v98-6g37-x9g6

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-9v98-6g37-x9g6/GHSA-9v98-6g37-x9g6.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-9v98-6g37-x9g6

Aliases

CVE-2026-49252

Published

2026-06-26T21:03:59Z

Modified

2026-06-26T21:15:08.266424829Z

Severity

9.9 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L CVSS Calculator

Summary

deepstream is vulnerable to prototype pollution

Details

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

Database specific

{
    "nvd_published_at": "2026-06-18T21:16:29Z",
    "cwe_ids": [
        "CWE-1321"
    ],
    "github_reviewed": true,
    "severity": "CRITICAL",
    "github_reviewed_at": "2026-06-26T21:03:59Z"
}

References

Affected packages

npm / @deepstream/server

Package

Name: @deepstream/server; View open source insights on deps.dev
Purl: pkg:npm/%40deepstream%2Fserver

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

10.0.5

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-9v98-6g37-x9g6/GHSA-9v98-6g37-x9g6.json"