What’s Vulnerable › Vulnerabilities

CVE-2019-25025

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-05 · updated 2026-06-17

Description

The activerecord-session_store (aka Active Record Session Store) component through 1.1.3 for Ruby on Rails does not use a constant-time approach when delivering information about whether a guessed session ID is valid. Consequently, remote attackers can leverage timing discrepancies to achieve a correct guess in a relatively short amount of time. This is a related issue to CVE-2019-16782.

Affected products

• rubyonrails Active Record Session Store: through 1.1.3

References

• https://github.com/rails/activerecord-session_store/pull/151
• https://github.com/rails/activerecord-session_store/pull/151

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