HCL Connections s vulnerable to possible denial of service for certain users
Priority LOW 29Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
HCL Connections is vulnerable to a denial of service, caused by improper validation on certain requests. Using a specially-crafted request an attacker could exploit this vulnerability to cause denial of service for affected users.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00318 24th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| HCL Software | HCL Connections | 6.5, 7.0, 8.0 | — | No fix listed | CNA |
- HCL Connections VendorHCL Software Affected 6.5, 7.0, 8.0 Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hcltech:connections:6.5:*:*:*:*:*:*:* | 6.5 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:connections:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:connections:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | HCL Software |
- cpe:2.3:a:hcltech:connections:6.5:*:*:*:*:*:*:* Versions 6.5 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:connections:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:connections:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·HCL Software
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-28018
- 2026-10-03 Alias added: GHSA-4272-8494-h23x
References
More HCL Software Connections vulnerabilities
- TI-2020-03564 Information disclosure through error messages in "HCL Connections" CVSS 3.1MEDIUM 6.5
- TI-2024-19869 HCL Connections is vulnerable to broken access control CVSS 3.1MEDIUM 6.5
- TI-2023-12608 HCL Connections is vulnerable to sensitive information disclosure CVSS 3.1MEDIUM 6.5
- TI-2025-32718 HCL Connections is vulnerable to sensitive information disclosure CVSS 3.1MEDIUM 6.5
- TI-2023-19132 Cross-site scripting in HCL Connections CVSS 3.1MEDIUM 6.1
- TI-2019-03137 Open redirect in HCL Connections CVSS 3.1MEDIUM 6.1
Sources
- CVE-2023-28018 · CVE Program
- CVE-2023-28018 · NVD
- FIRST EPSS
- GHSA-4272-8494-h23x · GitHub Advisory Database · CC BY 4.0
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