Summary
WildFly has incomplete blacklist vulnerability
Incomplete blacklist vulnerability in the servlet filter restriction mechanism in WildFly (formerly JBoss Application Server) before 10.0.0.Final on Windows allows remote attackers to read the sensitive files in the (1) WEB-INF or (2) META-INF directory via a request that contains (a) lowercase or (b) "meaningless" characters.
Impact
CVE-2016-0793 has a CVSS score of 7.5 (High). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (10.0.0.Final); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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org.wildfly:wildfly-parent to 10.0.0.Final or later; org.wildfly:wildfly-undertow to 10.0.0.Final or later
Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
Frequently Asked Questions
- What is CVE-2016-0793? CVE-2016-0793 is a high-severity security vulnerability in org.wildfly:wildfly-parent (maven), affecting versions < 10.0.0.Final. It is fixed in 10.0.0.Final.
- How severe is CVE-2016-0793? CVE-2016-0793 has a CVSS score of 7.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which packages are affected by CVE-2016-0793?
org.wildfly:wildfly-parent(maven) (versions < 10.0.0.Final)org.wildfly:wildfly-undertow(maven) (versions < 10.0.0.Final)
- Is there a fix for CVE-2016-0793? Yes. CVE-2016-0793 is fixed in 10.0.0.Final. Upgrade to this version or later.
- Is CVE-2016-0793 exploitable, and should I be worried? Whether CVE-2016-0793 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2016-0793 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2016-0793?
- Upgrade
org.wildfly:wildfly-parentto 10.0.0.Final or later - Upgrade
org.wildfly:wildfly-undertowto 10.0.0.Final or later
- Upgrade