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Vulnerabilities

Security fix · CVE-2025-46336

Rack::Session is a session management implementation for Rack.

Published May 8, 2025 · catalog updated May 8, 2025 · Rack::Session is a session

Check if you run it

No confirmed exploitation is on record for CVE-2025-46336. EPSS is 0.33%. Act only if a listed version of Rack::Session is a session is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Rack::Session is a session).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.33%
Remediation
Version ranges on file
Affected products
vendor rack rack-session 2.0.0, < 2.1.1

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor rack rack-session 2.0.0, < 2.1.12.0.0, < 2.1.1

How to fix CVE-2025-46336

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-46336. EPSS is 0.33%. Act only if a listed version of Rack::Session is a session is installed.

Which versions are affected?

Compare what you have installed with rack rack-session 2.0.0, < 2.1.1 2.0.0, < 2.1.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.33%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 8, 2025 · EUVD

    Detected

    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 il

  2. May 8, 2025 · EUVD

    Updated

    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 il

Sources

  • CVE.orgVulnerability recordCVE-2025-46336

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-46336

    30-day exploitation probability 0.3%

    first.org
  • EUVDVulnerability recordEUVD-2025-14006

    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 attack

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.