CVE-2025-11966
October 22, 2025
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.
Affected Packages
https://github.com/vert-x3/vertx-web.git (GITHUB):
Affected version(s) >=3.0.0 <4.5.22Fix Suggestion:
Update to version 4.5.22https://github.com/vert-x3/vertx-web.git (GITHUB):
Affected version(s) >=5.0.0 <5.0.5Fix Suggestion:
Update to version 5.0.5io.vertx:vertx-web (JAVA):
Affected version(s) >=4.0.0 <4.5.22Fix Suggestion:
Update to version 4.5.22io.vertx:vertx-web (JAVA):
Affected version(s) >=5.0.0 <5.0.5Fix Suggestion:
Update to version 5.0.5io.vertx:vertx-web (JAVA):
Affected version(s) >=3.0.0-milestone6 <4.5.22Fix Suggestion:
Update to version 4.5.22Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
EPSS
Base Score:
0.05
