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CVE-2026-39324

🗓️ 07 Apr 2026 18:13:28Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov📰️ 1 Media mentions👁 124 Views🌐 WEB

Rack::Session::Cookie from 2.0.0 to 2.1.1 accepts crafted cookies on decryption failure, bypassing secrets.

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Detection
Affected
Refs
Paths
Social
NVD
Vulners
Node
rackrack-sessionRange2.0.0–2.1.2ruby
[
  {
    "vendor": "rack",
    "product": "rack-session",
    "versions": [
      {
        "version": ">= 2.0.0, < 2.1.2",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
rack.sessionheader/adminServer accepts forged session cookies due to fallback to default decoder after decryption failure, allowing privilege escalation to admin.CWE-502, CWE-565, CWE-345, CWE-287

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17 Jun 2026 10:41Current
6.4Medium risk
Vulners AI Score6.4
CVSS 3.19.8
CVSS 49.3
EPSS0.00275
SSVC
124