CVE-2025-11966
Eclipse Vert.x Stored XSS
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.
INFO
Published Date :
Oct. 22, 2025, 3:15 p.m.
Last Modified :
Jan. 20, 2026, 7:31 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | LOW | e51fbebd-6053-4e49-959f-1b94eeb69a2c | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update Eclipse Vert.x to a version that addresses this vulnerability.
- Disable directory listing if updates are not immediately possible.
- Sanitize or restrict filenames to prevent script injection.
Public PoC/Exploit Available at Github
CVE-2025-11966 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-11966.
| URL | Resource |
|---|---|
| https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/303 | Issue Tracking Vendor Advisory Exploit |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-11966 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-11966
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
th2-core
Dockerfile Java Kotlin
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-11966 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-11966 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jan. 20, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (excluding) 4.5.22 *cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:* versions from (including) 5.0.0 up to (excluding) 5.0.5 Added Reference Type Eclipse Foundation: https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/303 Types: Exploit, Issue Tracking, Vendor Advisory -
New CVE Received by [email protected]
Oct. 22, 2025
Action Type Old Value New Value 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. Added CVSS V4.0 AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/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 Added CWE CWE-79 Added CWE CWE-80 Added Reference https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/303