The Vert.x Web static handler component cache can be manipulated to deny the access to static files served by the handler using specifically crafted request URI. The issue comes from an improper implementation of the C. rule of section 5.2.4 of RFC3986 and is fixed in Vert.x Core component (used by Vert.x Web): https://github.com/eclipse-vertx/vert.x/pull/5895 Steps to reproduce Given a file served by the static handler, craft an URI that introduces a string like bar%2F..%2F after the last / char to deny the access to the URI with an HTTP 404 response. For example https://example.com/foo/index.html can be denied with https://example.com/foo/bar%2F..%2Findex.html Mitgation Disabling Static Handler cache fixes the issue. StaticHandler staticHandler = StaticHandler.create().setCachingEnabled(false);

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:33371 advisory.

    Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss Enterprise Application Platform 7.3.18 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 7.3.17, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 7.3.18 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * jose4j: From CVEorg collector (CVE-2024-29371)

    * undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache     Poisoning and SSRF (CVE-2025-12543)

    * org.apache.cxf/cxf-core: Apache CXF: Denial of Service vulnerability with temporary files     (CVE-2025-23184)

    * undertow-core: Undertow MadeYouReset HTTP/2 DDoS Vulnerability (CVE-2025-9784)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - The Vert.x Web static handler component cache can be manipulated to deny the access to static files served
    by the handler using specifically crafted request URI. The issue comes from an improper implementation of
    the C. rule of section 5.2.4 of RFC3986 and is fixed in Vert.x Core component (used by Vert.x Web):
    https://github.com/eclipse-vertx/vert.x/pull/5895 Steps to reproduce Given a file served by the static
    handler, craft an URI that introduces a string like bar%2F..%2F after the last / char to deny the access
    to the URI with an HTTP 404 response. For example https://example.com/foo/index.html can be denied with
    https://example.com/foo/bar%2F..%2Findex.html Mitgation Disabling Static Handler cache fixes the issue.
    StaticHandler staticHandler = StaticHandler.create().setCachingEnabled(false); (CVE-2026-1002)

ID	Name	Product	Family	Severity
323872	RHEL 7 : Red Hat JBoss Enterprise Application Platform 7.3.18 (RHSA-2026:33371)	Nessus	Red Hat Local Security Checks	high
436791	SCA: security update for io.vertx:vertx-core (GHSA-cphf-4846-3xx9)	Tenable Cloud Security	SCA Checks	medium
436791	SCA: security update for io.vertx:vertx-core (GHSA-cphf-4846-3xx9)	Tenable Self-Hosted Container Security	SCA Checks	medium

Detections

Analytics

CVE-2026-1002

medium

Tenable Plugins

high

medium

medium