CVE-2026-21788

| EUVD-2026-13075 MEDIUM
2026-03-19 HCL
5.4
CVSS 3.1
Share

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 19, 2026 - 09:15 vuln.today
EUVD ID Assigned
Mar 19, 2026 - 09:15 euvd
EUVD-2026-13075
CVE Published
Mar 19, 2026 - 08:44 nvd
MEDIUM 5.4

Tags

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.

Analysis

HCL Connections contains a reflected or stored cross-site scripting (XSS) vulnerability that allows authenticated attackers to inject malicious JavaScript into the application, which executes in the browsers of other users who interact with the crafted payload. An attacker with valid credentials can steal session cookies and authentication tokens, potentially compromising victim accounts and enabling further attacks such as lateral movement or data exfiltration. …

Sign in for full analysis, threat intelligence, and remediation guidance.

Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Sign in for detailed remediation steps.

Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +27
POC: 0

Share

CVE-2026-21788 vulnerability details – vuln.today

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy