CVE-2026-21788

MEDIUM

HCL Connections is vulnerable to cross-site scripting (XSS)

Title source: cna

Description

HCL Connections is vulnerable to a cross-site scripting attack where an attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user which leads to executing malicious script code.  This may allow the attacker steal cookie-based authentication credentials and comprise user's account then launch other attacks.

Scores

CVSS v3 5.4
EPSS 0.0005
EPSS Percentile 14.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (2)
HCLSoftware/Connections 8
hcltech/connections 8.0 (13 CPE variants)
Published Mar 19, 2026
Tracked Since Mar 19, 2026