What’s Vulnerable › Vulnerabilities
CVE-2025-11966
- Severity: medium (CVSS 6.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2025-10-22 · updated 2026-10-08
- Weakness: CWE-79
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.
Affected products
- Eclipse Foundation Eclipse Vert.x: from 4.0.0 before 4.5.22; from 5.0.0 before 5.0.5 — fixed in 4.5.22, 5.0.5
How to fix
Upgrade to a fixed version: Eclipse Foundation Eclipse Vert.x 4.5.22, 5.0.5. Check the vendor advisory for mitigations.
References
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