Camden Narzt Software Developer

TL:DR; Passenger is not affected.

Passenger has no components written in Java and thus does not use log4j. As such, it is not affected by the log4j vulnerabilities (CVE-2021-45046 & CVE-2021-44228, or any subsequently discovered issues with log4j).

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Over 650,000+ sites use Passenger as their app server to ensure that their web apps, microservices and APIs are served with outstanding reliability, performance and control.

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