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2 vulnerabilities found for rack-session by rack

CVE-2026-39324 (GCVE-0-2026-39324)
Vulnerability from cvelistv5
Published
2026-04-07 18:13
Modified
2026-04-08 18:44
Severity ?
9.3 (Critical) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE
  • CWE-287 - Improper Authentication
  • CWE-345 - Insufficient Verification of Data Authenticity
  • CWE-502 - Deserialization of Untrusted Data
  • CWE-565 - Reliance on Cookies without Validation and Integrity Checking
Summary
Rack::Session is a session management implementation for Rack. From 2.0.0 to before 2.1.2, Rack::Session::Cookie incorrectly handles decryption failures when configured with secrets:. If cookie decryption fails, the implementation falls back to a default decoder instead of rejecting the cookie. This allows an unauthenticated attacker to supply a crafted session cookie that is accepted as valid session data without knowledge of any configured secret. Because this mechanism is used to load session state, an attacker can manipulate session contents and potentially gain unauthorized access. This vulnerability is fixed in 2.1.2.
References
Impacted products
Vendor Product Version
rack rack-session Version: >= 2.0.0, < 2.1.2
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Show details on NVD website

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CVE-2025-46336 (GCVE-0-2025-46336)
Vulnerability from cvelistv5
Published
2025-05-08 19:26
Modified
2025-05-08 20:18
Severity ?
4.2 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
  • CWE-613 - Insufficient Session Expiration
Summary
Rack::Session is a session management implementation for Rack. In versions starting from 2.0.0 to before 2.1.1, when using the Rack::Session::Pool middleware, and provided the attacker can acquire a session cookie (already a major issue), the session may be restored if the attacker can trigger a long running request (within that same session) adjacent to the user logging out, in order to retain illicit access even after a user has attempted to logout. This issue has been patched in version 2.1.1.
References
Impacted products
Vendor Product Version
rack rack-session Version: >= 2.0.0, < 2.1.1
 Create a notification for this product.
Show details on NVD website

To clipboard 

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