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jetty: requests to the ConcatServlet and WelcomeFilter are able to access protected resources within the WEB-INF directory

🗓️ 18 Oct 2021 17:45:30Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 7 Views

Jetty vulnerability lets ConcatServlet and WelcomeFilter expose web inf directory through doubly encoded paths.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8noarchjenkins2.289.3.1630554997-1.el8jenkins-2.289.3.1630554997-1.el8.noarch.rpm

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28 Jun 2026 12:34Current
6.9Medium risk
Vulners AI Score6.9
CVSS 25
CVSS 3.15.3
EPSS0.7848
CWE-200
jetty vulnerabilityconcat servletwelcome filterdoubly encoded pathweb inf directoryweb xml exposurejetty versions
7