Vulnerability-Lookup

CVE-2026-21827 (GCVE-0-2026-21827)

Vulnerability from cvelistv5 – Published: 2026-08-31 15:48 – Updated: 2026-09-01 14:47

Title

HCL Connections is vulnerable to an information disclosure vulnerability

Summary

HCL Connections is vulnerable to an information disclosure vulnerability which could allow a user to obtain sensitive information they are not entitled to, caused by improper handling of request data they are not entitled to, caused by improper handling of request data.

Severity

3.1 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-01 14:46 UTC

CWE

CWE-359 - Exposure of private personal information to an unauthorized actor

Assigner

HCL mitre root

References

1 reference

URL	Tags
https://support.hcl-software.com/csm?id=kb_articl…

Impacted products

1 product

Vendor	Product	Version	CPE status
HCLSoftware	Connections	Affected: 7.0, 8.0	guessed

Date Public

2026-08-31 15:11

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-21827

Vulnerability from fkie_nvd - Published: 2026-08-31 16:17 - Updated: 2026-09-01 15:17

Severity

3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

Summary

References

	URL	Tags
	psirt@hcl.com	https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0130164

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Connections",
          "vendor": "HCLSoftware",
          "versions": [
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              "status": "affected",
              "version": "7.0, 8.0"
            }
          ]
        }
      ],
      "source": "psirt@hcl.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "HCL Connections is vulnerable to an information disclosure vulnerability which could allow a user to obtain sensitive information they are not entitled to, caused by improper handling of request data they are not entitled to, caused by improper handling of request data."
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  ],
  "id": "CVE-2026-21827",
  "lastModified": "2026-09-01T15:17:13.777",
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        "type": "Secondary"
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GHSA-XQ3V-PHJG-8R8X

Vulnerability from github – Published: 2026-08-31 18:31 – Updated: 2026-08-31 18:31

Details

Severity

3.1 (Low)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-21827"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-359"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-31T16:17:55Z",
    "severity": "LOW"
  },
  "details": "HCL Connections is vulnerable to an information disclosure vulnerability which could allow a user to obtain sensitive information they are not entitled to, caused by improper handling of request data they are not entitled to, caused by improper handling of request data.",
  "id": "GHSA-xq3v-phjg-8r8x",
  "modified": "2026-08-31T18:31:28Z",
  "published": "2026-08-31T18:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21827"
    },
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      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-21827 (GCVE-0-2026-21827)

FKIE_CVE-2026-21827

GHSA-XQ3V-PHJG-8R8X

Tags

Sightings

Nomenclature