CVE-2026-21788: HCL Connections is vulnerable to cross-site scripting (XSS)
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-21788?
CVE-2026-21788 is considered a medium severity vulnerability due to its potential for cross-site scripting (XSS) attacks.
How do I fix CVE-2026-21788?
To mitigate CVE-2026-21788, update HCL Connections to the latest version that includes the XSS vulnerability patch.
What types of attacks are possible with CVE-2026-21788?
CVE-2026-21788 allows attackers to execute arbitrary script code in the browser of an unsuspecting user, potentially leading to session hijacking or other malicious actions.
Who is affected by CVE-2026-21788?
Any users or organizations employing HCL Connections are affected by CVE-2026-21788 due to its inherent vulnerability to XSS.
Is CVE-2026-21788 being actively exploited?
As of the latest reports, there is no confirmed active exploitation of CVE-2026-21788, but users are advised to apply patches promptly to reduce risk.