Spring Security Advisories

CVE-2022-31684: Reactor Netty HTTP Server may log request headers

LOW | OCTOBER 19, 2022 | CVE-2022-31684


Reactor Netty HTTP Server, in versions 1.0.11 - 1.0.23, may log request headers in some cases of invalid HTTP requests. The logged headers may reveal valid access tokens to those with access to server logs. This may affect only invalid HTTP requests where logging at WARN level is enabled.

Affected Spring Products and Versions

  • Reactor Netty
    • 1.0.11 to 1.0.23


Users of affected versions should apply the following mitigation. 1.0.x users that don't use the default log level (ERROR) should upgrade to 1.0.24 (reactor-bom 2020.0.24). No other steps are necessary. Release that have fixed this issue include:

  • Reactor Netty
    • 1.0.24



  • 2022-10-19: Initial vulnerability report published.

Get ahead

VMware offers training and certification to turbo-charge your progress.

Learn more

Get support

Spring Runtime offers support and binaries for OpenJDK™, Spring, and Apache Tomcat® in one simple subscription.

Learn more

Upcoming events

Check out all the upcoming events in the Spring community.

View all