Stored Cross-Site Scripting in Eclipse Vert.x Due to Improper Escaping
CVE-2025-11966

2.3LOW

Key Information:

Vendor

Eclipse Foundation

Status
Vert.x
Vendor
CVE Published:
22 October 2025

What is CVE-2025-11966?

A stored cross-site scripting vulnerability exists in Eclipse Vert.x versions 4.0.0 to 4.5.21 and 5.0.0 to 5.0.4, triggered when directory listing is enabled. The vulnerability arises from improper escaping of file and directory names inserted into generated HTML, allowing an attacker who can manipulate files within the served path to inject malicious scripts. These scripts execute in the context of users accessing the directory, potentially compromising sensitive information and user sessions.

Affected Version(s)

Vert.x 4.0.0 < 4.5.22

Vert.x 5.0.0 < 5.0.5

References

https://gitlab.eclipse.org/security/vulnerability-reports...

CVSS V4

Score:
2.3
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Sho Odagiri
JSON
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CVE-2025-11966 : Stored Cross-Site Scripting in Eclipse Vert.x Due to Improper Escaping