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Vulnerabilities

Vulnerability · CVE-2026-21789

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

Published May 18, 2026 · catalog updated Jun 17, 2026 · HCL Connections contains a

Check if you run it

No confirmed exploitation is on record for CVE-2026-21789. EPSS is 0.12%. Act only if a listed version of HCL Connections contains a is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (HCL Connections contains a).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.12%
Remediation
Not established
Affected products
See sources for product scope

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

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-21789

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-21789. EPSS is 0.12%. Act only if a listed version of HCL Connections contains a is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-863: Incorrect Authorization. EPSS 0.12%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 18, 2026 · NIST NVD

    Detected

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

  2. Jun 17, 2026 · NIST NVD

    Updated

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

Sources

  • CVE.orgVulnerability recordCVE-2026-21789

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-21789

    30-day exploitation probability 0.1%

    first.org
  • NIST NVDVulnerability recordCVE-2026-21789

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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.