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CVE-2026-33946 MCP Ruby SDK: Insufficient Session Binding Allows SSE Stream Hijacking via Session ID Replay

🗓️ 27 Mar 2026 21:20:07Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 25 Views

MCP Ruby SDK before 0.9.2 allows server sent events hijacking via session replay; patch released in 0.9.2.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-33946
27 Mar 202621:20
attackerkb
circl
Circl
CVE-2026-33946
27 Mar 202603:31
circl
cnnvd
CNNVD
MCP Ruby SDK 安全漏洞
27 Mar 202600:00
cnnvd
cve
CVE
CVE-2026-33946
27 Mar 202621:20
cve
euvd
EUVD
EUVD-2026-16866
27 Mar 202621:20
euvd
github
Github Security Blog
MCP Ruby SDK: Insufficient Session Binding Allows SSE Stream Hijacking via Session ID Replay
27 Mar 202618:36
github
nvd
NVD
CVE-2026-33946
27 Mar 202622:16
nvd
osv
OSV
GHSA-QVQR-5CV7-WH35 MCP Ruby SDK: Insufficient Session Binding Allows SSE Stream Hijacking via Session ID Replay
27 Mar 202618:36
osv
ptsecurity
Positive Technologies
PT-2026-28576
27 Mar 202600:00
ptsecurity
redhatcve
RedhatCVE
CVE-2026-33946
30 Mar 202617:06
redhatcve
Rows per page
[
  {
    "vendor": "modelcontextprotocol",
    "product": "ruby-sdk",
    "versions": [
      {
        "version": "< 0.9.2",
        "status": "affected"
      }
    ]
  }
]

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