Spring Security Advisories

CVE-2019-3795: Insecure Randomness When Using a SecureRandom Instance Constructed by Spring Security

LOW | APRIL 04, 2019 | CVE-2019-3795


Spring Security versions 4.2.x prior to 4.2.12, 5.0.x prior to 5.0.12, and 5.1.x prior to 5.1.5 contain an insecure randomness vulnerability when using SecureRandomFactoryBean#setSeed to configure a SecureRandom instance. In order to be impacted, an honest application must provide a seed and make the resulting random material available to an attacker for inspection.

Affected Spring Products and Versions

  • Spring Security 4.2 to 4.2.11
  • Spring Security 5.0 to 5.0.11
  • Spring Security 5.1 to 5.1.4


Users of affected versions should apply the following mitigation:

  • 4.2.x users should upgrade to 4.2.12
  • 5.0.x users should upgrade to 5.0.12
  • 5.1.x users should upgrade to 5.1.5


This issue was identified and responsibly reported by Thijs Alkemade.


  • 2019-04-02: Initial vulnerability report published.

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