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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👁 133 Views🌐 WEB

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

Related
Detection
Affected
Refs
Paths
Social
ReporterTitlePublishedViews
Family
githubexploit
GithubExploit
Exploit for CVE-2026-39324
7 Apr 202600:16
–githubexploit
attackerkb
attackerkb
CVE-2026-39324
7 Apr 202618:13
–attackerkb
avleonov
Information Security Automation
April Linux Patch Wednesday
22 Apr 202616:00
–avleonov
bdu_fstec
BDU FSTEC
Rust Rack Session DoS
7 Jul 202600:00
–bdu_fstec
cgr
Chainguard
CVE-2026-39324 vulnerabilities
11 Apr 202602:19
–cgr
circl
Circl
CVE-2026-39324
7 Apr 202603:00
–circl
cnnvd
CNNVD
Rack::Session security vulnerability
7 Apr 202600:00
–cnnvd
cvelist
Cvelist
CVE-2026-39324 Rack::Session::Cookie secrets: decrypt failure fallback enables secretless session forgery and Marshal deserialization
7 Apr 202618:13
–cvelist
debian
Debian
[SECURITY] [DSA 6542-1] ruby-rack-session security update
4 Oct 202618:47
–debian
debiancve
Debian CVE
CVE-2026-39324
7 Apr 202618:13
–debiancve
Rows per page
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/adminForged session cookie accepted due to decryption failure fallback, allowing admin access.CWE-287, CWE-345, CWE-502, CWE-565

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17 Jun 2026 10:41Current
6.4Medium risk
Vulners AI Score6.4
CVSS 3.19.8
CVSS 49.3
EPSS0.0027
SSVC
133