CVE-2025-59902 PUBLISHED

HTML injection in NICE Chat

Assigner: INCIBE
Reserved: 23.09.2025 Published: 03.02.2026 Updated: 03.02.2026

HTML injection vulnerability in NICE Chat. This vulnerability allows an attacker to inject and render arbitrary HTML content in email transcripts by modifying the 'firstName' and 'lastName' parameters during a chat session. The injected HTML is included in the body of the email sent by the system, which could enable phishing attacks, impersonation, or credential theft.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS Score: 7.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	Passive

CVSS 4.0

Product Status

Vendor	NICE
Product	NICE Chat
Versions	Default: unaffected Version all versions is affected

Credits

Leopoldo Angulo Gallego (leoanggal1) finder

References

https://www.incibe.es/en/incibe-cert/notices/aviso/html-injection-nice-chat

Problem Types

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') CWE