HCL Connections is vulnerable to cross-site scripting (XSS)
Priority LOW 24CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00174 6th 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 | Connections | 8 | — | No fix listed | CNA |
- Connections VendorHCL Software Affected 8 Fixed in — No fix listed CNA
CPE configurations NVD · 13
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hcltech:connections:8.0:-:*:*:*:*:*:* | 8.0 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:connections:8.0:cumulative_release1:*:*:*:*:*:* | 8.0 cumulative_release1 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:connections:8.0:cumulative_release10:*:*:*:*:*:* | 8.0 cumulative_release10 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:connections:8.0:cumulative_release11:*:*:*:*:*:* | 8.0 cumulative_release11 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:connections:8.0:cumulative_release12:*:*:*:*:*:* | 8.0 cumulative_release12 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:connections:8.0:cumulative_release2:*:*:*:*:*:* | 8.0 cumulative_release2 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:connections:8.0:cumulative_release3:*:*:*:*:*:* | 8.0 cumulative_release3 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:connections:8.0:cumulative_release4:*:*:*:*:*:* | 8.0 cumulative_release4 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:connections:8.0:cumulative_release5:*:*:*:*:*:* | 8.0 cumulative_release5 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:connections:8.0:cumulative_release6:*:*:*:*:*:* | 8.0 cumulative_release6 | Vulnerable | HCL Software |
- cpe:2.3:a:hcltech:connections:8.0:-:*:*:*:*:*:* Versions 8.0 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:connections:8.0:cumulative_release1:*:*:*:*:*:* Versions 8.0 cumulative_release1 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:connections:8.0:cumulative_release10:*:*:*:*:*:* Versions 8.0 cumulative_release10 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:connections:8.0:cumulative_release11:*:*:*:*:*:* Versions 8.0 cumulative_release11 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:connections:8.0:cumulative_release12:*:*:*:*:*:* Versions 8.0 cumulative_release12 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:connections:8.0:cumulative_release2:*:*:*:*:*:* Versions 8.0 cumulative_release2 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:connections:8.0:cumulative_release3:*:*:*:*:*:* Versions 8.0 cumulative_release3 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:connections:8.0:cumulative_release4:*:*:*:*:*:* Versions 8.0 cumulative_release4 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:connections:8.0:cumulative_release5:*:*:*:*:*:* Versions 8.0 cumulative_release5 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:connections:8.0:cumulative_release6:*:*:*:*:*:* Versions 8.0 cumulative_release6 Vulnerable ·HCL Software
Show 3 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hcltech:connections:8.0:cumulative_release7:*:*:*:*:*:* | 8.0 cumulative_release7 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:connections:8.0:cumulative_release8:*:*:*:*:*:* | 8.0 cumulative_release8 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:connections:8.0:cumulative_release9:*:*:*:*:*:* | 8.0 cumulative_release9 | Vulnerable | HCL Software |
- cpe:2.3:a:hcltech:connections:8.0:cumulative_release7:*:*:*:*:*:* Versions 8.0 cumulative_release7 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:connections:8.0:cumulative_release8:*:*:*:*:*:* Versions 8.0 cumulative_release8 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:connections:8.0:cumulative_release9:*:*:*:*:*:* Versions 8.0 cumulative_release9 Vulnerable ·HCL Software
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-21788
- 2026-10-03 Alias added: GHSA-p5wg-ghxx-734q
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-2023-12604 HCL Connections s vulnerable to possible denial of service for certain users 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
Sources
- CVE-2026-21788 · CVE Program
- CVE-2026-21788 · NVD
- FIRST EPSS
- GHSA-p5wg-ghxx-734q · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences