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CVE-2026-1002· NVD / CVE Program· CNA eclipse

Eclipse Vert.x Web static handler file access denial

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);

MediumCVSS 6.9 · v4.0—No exploit Fix available
Published
Jan 15, 2026
Updated
Jun 17, 2026
EPSS
0.4% · 31th percentile
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Report tools

JSON

Action score

27

Monitor

Low priority for now.

CVSS
27 / 40 · 6.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
proof of concept
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · eclipse
6.9
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

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Affected systems

VendorProduct
eclipsevert.x-web

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • eclipse vert.x-web4.0.0 and later · up to 4.5.23 inclusive
  • eclipse vert.x-web5.0.0 and later · up to 5.0.6 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (eclipse). Independent of NVD's CPE analysis and usually ahead of it.

  • Eclipse Vert.x Eclipse Vert.x

    • 4.0.0 and later · up to and including 4.5.23affected · semver
    • 5.0.0 and later · up to and including 5.0.6affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Mavenio.vertx:vertx-corefrom 5.0.0.CR1 · before 5.0.75.0.7
Mavenio.vertx:vertx-corebefore 4.5.244.5.24
Red Hat:jboss_enterprise_application_platform_eus:7.3::el7eap7-apache-cxfbefore 0:3.4.10-4.SP2_redhat_00004.1.el7eap0:3.4.10-4.SP2_redhat_00004.1.el7eap
Red Hat:jboss_enterprise_application_platform_eus:7.3::el7eap7-apache-cxf-rtbefore 0:3.4.10-4.SP2_redhat_00004.1.el7eap0:3.4.10-4.SP2_redhat_00004.1.el7eap
Red Hat:jboss_enterprise_application_platform_eus:7.3::el7eap7-apache-cxf-servicesbefore 0:3.4.10-4.SP2_redhat_00004.1.el7eap0:3.4.10-4.SP2_redhat_00004.1.el7eap
Red Hat:jboss_enterprise_application_platform_eus:7.3::el7eap7-apache-cxf-toolsbefore 0:3.4.10-4.SP2_redhat_00004.1.el7eap0:3.4.10-4.SP2_redhat_00004.1.el7eap
Red Hat:jboss_enterprise_application_platform_eus:7.3::el7eap7-undertowbefore 0:2.0.41-8.SP9_redhat_00001.1.el7eap0:2.0.41-8.SP9_redhat_00001.1.el7eap
Red Hat:jboss_enterprise_application_platform_eus:7.3::el7eap7-wildflybefore 0:7.3.18-3.GA_redhat_00001.1.el7eap0:7.3.18-3.GA_redhat_00001.1.el7eap
Red Hat:jboss_enterprise_application_platform_eus:7.3::el7eap7-wildfly-java-jdk11before 0:7.3.18-3.GA_redhat_00001.1.el7eap0:7.3.18-3.GA_redhat_00001.1.el7eap
Red Hat:jboss_enterprise_application_platform_eus:7.3::el7eap7-wildfly-java-jdk8before 0:7.3.18-3.GA_redhat_00001.1.el7eap0:7.3.18-3.GA_redhat_00001.1.el7eap
Red Hat:jboss_enterprise_application_platform_eus:7.3::el7eap7-wildfly-javadocsbefore 0:7.3.18-3.GA_redhat_00001.1.el7eap0:7.3.18-3.GA_redhat_00001.1.el7eap
Red Hat:jboss_enterprise_application_platform_eus:7.3::el7eap7-wildfly-modulesbefore 0:7.3.18-3.GA_redhat_00001.1.el7eap0:7.3.18-3.GA_redhat_00001.1.el7eap

Same product

eclipse: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-35217Vert.x-Web framework v4.0 milestone 1-4 does not perform a correct CSRF verification.
    35Monitor
  • CVE-2023-24815Disclosure of classpath resources on Windows when mounted on a wildcard route in vertx-web
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Maven:io.vertx:vertx-core4.5.24Package registry (OSV)
Maven:io.vertx:vertx-core5.0.7Package registry (OSV)
red hat:eap7-apache-cxf0:3.4.10-4.SP2_redhat_00004.1.el7eap · Red Hat:jboss_enterprise_application_platform_eus:7.3::el7Package registry (OSV)
red hat:eap7-apache-cxf-rt0:3.4.10-4.SP2_redhat_00004.1.el7eap · Red Hat:jboss_enterprise_application_platform_eus:7.3::el7Package registry (OSV)
red hat:eap7-apache-cxf-services0:3.4.10-4.SP2_redhat_00004.1.el7eap · Red Hat:jboss_enterprise_application_platform_eus:7.3::el7Package registry (OSV)
red hat:eap7-apache-cxf-tools0:3.4.10-4.SP2_redhat_00004.1.el7eap · Red Hat:jboss_enterprise_application_platform_eus:7.3::el7Package registry (OSV)
red hat:eap7-undertow0:2.0.41-8.SP9_redhat_00001.1.el7eap · Red Hat:jboss_enterprise_application_platform_eus:7.3::el7Package registry (OSV)
red hat:eap7-wildfly0:7.3.18-3.GA_redhat_00001.1.el7eap · Red Hat:jboss_enterprise_application_platform_eus:7.3::el7Package registry (OSV)
red hat:eap7-wildfly-java-jdk110:7.3.18-3.GA_redhat_00001.1.el7eap · Red Hat:jboss_enterprise_application_platform_eus:7.3::el7Package registry (OSV)
red hat:eap7-wildfly-java-jdk80:7.3.18-3.GA_redhat_00001.1.el7eap · Red Hat:jboss_enterprise_application_platform_eus:7.3::el7Package registry (OSV)
red hat:eap7-wildfly-javadocs0:7.3.18-3.GA_redhat_00001.1.el7eap · Red Hat:jboss_enterprise_application_platform_eus:7.3::el7Package registry (OSV)
red hat:eap7-wildfly-modules0:7.3.18-3.GA_redhat_00001.1.el7eap · Red Hat:jboss_enterprise_application_platform_eus:7.3::el7Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
X

Weakness class (CWE)

CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records