CVE-2026-21789
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2026-21789- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
EUVDEUVD-2026-30798
HCL Connections contains a broken access control vulnerability that may allow unauthorized user to update data in certain scenarios.
- Record
EUVD-2026-30798- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-hx5c-g9jj-chxv
HCL Connections contains a broken access control vulnerability that may allow unauthorized user...
HCL Connections contains a broken access control vulnerability that may allow unauthorized user to update data in certain scenarios.
- Record
GHSA-hx5c-g9jj-chxv- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
NVD
HCL Connections contains a broken access control vulnerability that may allow unauthorized user to update data in certain scenarios.
- Record
CVE-2026-21789- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-21789 is a medium vulnerability (CVSS 4.6) in Hclsoftware Connections, published May 18, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.12%, the 1st percentile. No source names a fixed version.