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HCL Connections CVE-2026-21789

| EUVD-2026-30798 MEDIUM
Incorrect Authorization (CWE-863)
2026-05-18 HCL GHSA-hx5c-g9jj-chxv
4.6
CVSS 3.1
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CVSS VectorNVD

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

Lifecycle Timeline

1
Analysis Generated
May 18, 2026 - 20:00 vuln.today

DescriptionNVD

HCL Connections contains a broken access control vulnerability that may allow unauthorized user to update data in certain scenarios.

AnalysisAI

Broken access control in HCL Connections exposes an integrity risk where an authenticated low-privileged user can update data outside their intended authorization scope under specific conditions. The CVSS vector (AV:N/AC:L/PR:L/UI:R) confirms the attack is network-reachable, requires only low-privilege credentials, and involves some form of user interaction. …

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CVE-2026-21789 vulnerability details – vuln.today

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