SEPTEMBER 15, 2026
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Case File

CVE-2026-4103

MEDIUM · CVSS 6.4 Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-14 · Last synced 2026-09-15

CyberRota Analysis

AI-Generated

Insufficient HTML sanitization in the Publisher and Developer Portals of Java allows untrusted user input to be rendered unsafely, leading to potential JavaScript injection when API documentation is viewed. Successful exploitation could enable attackers to execute malicious scripts in the user's browser, potentially performing actions on behalf of the user based on their session privileges. Organizations using these portals, particularly those with users accessing API documentation, should prioritize addressing this vulnerability to mitigate the risk of session hijacking and unauthorized actions.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-4103
Severity
MEDIUM
CVSS
6.4
EPSS
N/A
Java

Original NVD Description

Insufficient HTML sanitization in the Publisher Portal and Developer Portal allows untrusted user input to be rendered without proper encoding or neutralization. This enables the injection and execution of malicious JavaScript when affected API documents are viewed. Successful exploitation may result in the execution of malicious scripts within the user's browser context when viewing API documentation. Users with permissions to access the API documentation through these portals may be impacted, potentially allowing attackers to perform actions on behalf of the user, depending on their session privileges.