In Eclipse Vert.x versions [4.0.0, 4.5.21] and [5.0.0, 5.0.4], when "directory listing" is enabled, file and directory names are inserted into generated HTML without proper escaping in the href, title, and link attributes. An attacker who can create or rename files or directories within a served path can craft filenames containing malicious script or HTML content, leading to stored cross-site scripting (XSS) that executes in the context of users viewing the affected directory listing.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-45p5-v273-3qqr Vert.x-Web vulnerable to Stored Cross-site Scripting in directory listings via file names
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 23 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
Title io.vertx/vertx-web: Eclipse Vert.x cross site scripting
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N'}

threat_severity

Moderate


Wed, 22 Oct 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 22 Oct 2025 15:00:00 +0000

Type Values Removed Values Added
Description In Eclipse Vert.x versions [4.0.0, 4.5.21] and [5.0.0, 5.0.4], when "directory listing" is enabled, file and directory names are inserted into generated HTML without proper escaping in the href, title, and link attributes. An attacker who can create or rename files or directories within a served path can craft filenames containing malicious script or HTML content, leading to stored cross-site scripting (XSS) that executes in the context of users viewing the affected directory listing.
Weaknesses CWE-79
CWE-80
References
Metrics cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published:

Updated: 2025-10-22T15:26:41.527Z

Reserved: 2025-10-20T14:50:01.166Z

Link: CVE-2025-11966

cve-icon Vulnrichment

Updated: 2025-10-22T15:25:55.166Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-22T15:15:31.730

Modified: 2025-10-22T21:12:48.953

Link: CVE-2025-11966

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-22T14:44:24Z

Links: CVE-2025-11966 - Bugzilla

cve-icon OpenCVE Enrichment

No data.