CVE-2024-50849

Medium

Published: 18 November 2024

Published

18 November 2024

Modified

20 October 2025

KEV Added

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Patch

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CVSS Score v3.1 4.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS Score 0.0071 72.7th percentile

Risk Priority 10 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-50849 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Rws Worldserver. Its CVSS base score is 4.8 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique JavaScript (T1059.007); ranked in the top 27.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2024-45026

Vulnerability details

A Stored Cross-Site Scripting (XSS) vulnerability in the "Rules" functionality of WorldServer v11.8.2 allows a remote authenticated attacker to execute arbitrary JavaScript code.

CWE(s): CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1059.007 JavaScript Execution

Adversaries may abuse various implementations of JavaScript for execution.

attack.mitre.org →

T1210 Exploitation of Remote Services Lateral Movement

Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.

attack.mitre.org →

T1539 Steal Web Session Cookie Credential Access

An adversary may steal web application or service session cookies and use them to gain access to web applications or Internet services as an authenticated user without needing credentials.

attack.mitre.org →

T1555.003 Credentials from Web Browsers Credential Access

Adversaries may acquire credentials from web browsers by reading files specific to the target browser.

attack.mitre.org →

Why these techniques?

Stored XSS allows authenticated attackers to inject and execute arbitrary JavaScript (T1059.007) in victims' browsers when rules are executed, enabling exploitation of the remote web service (T1210) and theft of web session cookies (T1539) or browser credentials (T1555.003).