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CVE-2026-21789— HCL Connections is vulnerable to broken access control

Quick assessment

Affected
HCLSoftware Connections
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

HCL Connections是印度HCL公司的一套企业协作平台。 HCL Connections存在安全漏洞，该漏洞源于访问控制失效，可能导致未经授权的用户在某些场景下更新数据。

CVSS 4.6 · Medium EPSS 0.12% · P2

Affected Version Matrix 1

VendorProduct Version RangeStatus
HCLSoftware Connections 8.0 affected
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I. Basic Information for CVE-2026-21789

Vulnerability Information
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Vulnerability Title
HCL Connections is vulnerable to broken access control
Source: CVE Program / CVE List V5
Vulnerability Description
HCL Connections contains a broken access control vulnerability that may allow unauthorized user to update data in certain scenarios.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
HCL Connections 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HCL Connections是印度HCL公司的一套企业协作平台。 HCL Connections存在安全漏洞，该漏洞源于访问控制失效，可能导致未经授权的用户在某些场景下更新数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
HCLSoftware Connections 8.0 -

II. Public POCs for CVE-2026-21789

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III. Intelligence Information for CVE-2026-21789

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Vendor Advisories for CVE-2026-21789 (1)

IV. Related Vulnerabilities

Same product: Connections
Same vendor: HCLSoftware
Same weakness: CWE-863

V. Comments for CVE-2026-21789

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