CVE-2026-21788CWE-79

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

Medium · published March 19, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
6.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00170 · 6.1th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-03-19T08:44Z
EPSS history
Timeline
  • 19 MAR 08:44Z
    HCL Connections is vulnerable to cross-site scripting (XSS)
    cvelistv5