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Vulnerability record · CVE-2025-59902 · published 3 February 2026

CVE-2025-59902: Cross-site scripting vulnerability

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.

7.1 CVSS 4.0 High EPSS 0.36% · top 72.5% CWE-79 · Cross-site scripting Deferred
7.1CVSS 4.0 base score
0.36%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

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

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Source: NIST National Vulnerability Database (record CVE-2025-59902), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.