HCL Connections 8.0 Broken Access Control (CVE-2026-21789)
CVE-2026-21789 Published on May 18, 2026

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

NVD

Vulnerability Analysis

CVE-2026-21789 can be exploited with network access, requires user interaction and a small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
REQUIRED
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
LOW
Availability Impact:
NONE

Weakness Type

What is an AuthZ Vulnerability?

The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

CVE-2026-21789 has been classified to as an AuthZ vulnerability or weakness.


Affected Versions

HCLSoftware Connections Version 8.0 is affected by CVE-2026-21789

Exploit Probability

EPSS
0.03%
Percentile
7.62%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.