CVE-2025-51398
Published: 21 July 2025
Summary
CVE-2025-51398 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Livehelperchat Live Helper Chat. Its CVSS base score is 5.4 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Drive-by Compromise (T1189); ranked in the top 31.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-22147
Vulnerability details
A stored cross-site scripting (XSS) vulnerability in the Facebook registration page of Live Helper Chat v4.60 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the Name parameter.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The stored XSS vulnerability allows authenticated attackers (e.g., operators) to inject arbitrary JavaScript payloads into the Facebook integration Name field, which executes in the browser context of higher-privileged users (e.g., administrators) viewing the settings page, facilitating drive-by compromise through malicious content on a legitimate web application and abuse of the JavaScript interpreter for execution.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.